[maven-release-plugin] prepare release ebean-11.15.1

Adds in the DB ARRAY support (exactly the same as Postgres)

.editorconfig

@@ -10,3 +10,4 @@ indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
 spaces_around_operators = true
+max_line_length = 130

.gitignore

@@ -13,10 +13,11 @@ ebean-profiling*.xml
 /db
 /mydb.db
 !src/test/ddl-review/*.sql
-
+profiling/
 
 # Intellij project files
 *.iml
 *.ipr
 *.iws
 .idea/
+*uuid.state

.travis.yml

@@ -1,3 +1,4 @@
+dist: trusty
 sudo: required
 language: java
 jdk:
@@ -7,17 +8,28 @@ git:
   depth: 3
 
 addons:
-  postgresql: "9.4"
+  postgresql: "9.6"
+#  apt:
+#    packages:
+#    - mysql-server-5.7
+#    - mysql-client-core-5.7
+#    - mysql-client-5.7
 
 services:
+  - docker
   - postgresql
+  - mysql
 
 before_script:
   - ./.travis/setup_database
+  - mysql -u root -e 'CREATE DATABASE test_ebean;'
+  - mysql -u root -e "CREATE USER 'test_ebean'@'localhost' IDENTIFIED BY 'test';"
+  - mysql -u root -e "GRANT ALL ON test_ebean.* TO 'test_ebean'@'localhost';"
 
 env:
   - EBEAN_DB=h2
   - EBEAN_DB=pg
+#  - EBEAN_DB=mysql
 
 install: true
 

CONFIGURATION.md

@@ -0,0 +1,298 @@
+Overview of ebean.properties file
+=================================
+
+
+### DbMigration options
+
+You can set individual values for different platforms when generating migrations
+
+`dbmigration.platform.<PLATFORM>.databaseSequenceBatchSize`
+For DB's using sequences this is the number of sequence values prefetched.
+ 
+`dbmigration.platform.<PLATFORM>.dbuuid`
+Control, how UUID generation should work - it affects DDL which column type is generated. Possible values:
+- BINARY enforces binary UUID 
+- VARCHAR enforces varchar UUID
+- BINARY_OPTIMIZED enforces binary-optimized UUID (makes sense only with Type1 ID)
+- AUTO_BINARY use binary when platform does not support native UUID
+- AUTO_BINARY_OPTIMIZED use binary-optimized when platform does not support native UUID
+- AUTO_VARCHAR (default) use varchar when platform does not support UUID 
+
+`dbmigration.platform.<PLATFORM>.uuidStoreAsBinary`
+Same as setting dbuuid to BINARY
+
+`dbmigration.platform.<PLATFORM>.geometrySRID`
+The Geometry SRID value (default 4326).
+
+`dbmigration.platform.<PLATFORM>.idType`
+The ID type (IDENTITY, SEQUENCE, GENERATOR, EXTERNAL)
+
+`dbmigration.platform.<PLATFORM>.mapping`
+Adjust the mapping. For example `BOOLEAN=integer(32);BIT=tinyint(3)`
+
+
+`ebean.migration.applyPrefix`
+Set this to "V" to be compatible with FlywayDB.
+
+`ebean.migration.applySuffix`
+Defaults to '.sql'
+
+`ebean.migration.dbusername`
+DB user used to run the DB migration.
+
+`ebean.migration.dbpassword`
+DB password used to run the DB migration.
+
+`ebean.migration.generate`
+Set to true if the DB migration should be generated on server start.
+
+`ebean.migration.generatePendingDrop`
+The version of a pending drop that should be generated as the next migration.
+
+`ebean.migration.includeGeneratedFileComment`
+TODO
+
+`ebean.migration.metaTable`
+For running migration the DB table that holds migration execution status. Default 'db_migration'
+
+`ebean.migration.migrationPath`
+Resource path for the migration xml and sql.
+
+`ebean.migration.modelPath`
+Subdirectory the model xml files go into. Default 'model'
+
+`ebean.migration.modelSuffix`
+Suffix. Default '.model.xml' 
+
+`ebean.migration.name`
+Description text that can be appended to the version to become the ddl script file name
+ 
+`ebean.migration.patchInsertOn`
+migration versions that should be added to history without running.
+
+`ebean.migration.patchResetChecksumOn`
+migration versions that should have their checksum reset and not run.
+Use this if you get a 'Checksum mismatch' error.
+
+`ebean.migration.placeholders`
+A comma and equals delimited placeholders that are substituted in SQL scripts when running migration (used by DB Migration runner only).
+
+`ebean.migration.platform`
+The database platform to generate migration DDL for.
+
+`ebean.migration.run`
+Flag set to true means to run any outstanding migrations on startup.
+
+`ebean.migration.version`
+The migration version name (typically FlywayDb compatible). Example: 1.1.1_2
+
+
+### Ebean UUID options
+
+`ebean.uuidVersion`
+Controls, how the UUIDs are generated. Possible values
+- VERSION4 (default) generate random V4 UUIDs,
+- VERSION1 generate rfc4122 compliant Type 1 UUIDs (requires a state file)
+- VERSION1RND generate fake Type 1 UUIDs
+
+Note, that V1 UUIDs in conjunction with AUTO_BINARY_OPTIMIZED will give you the best index performance, but you MUST understand how this works to avoid collisions.
+
+`ebean.uuidStateFile`
+The state file that is Required to generate V1 UUIDs
+
+
+### DocStoreConfig
+
+`ebean.docstore.active`
+True when the Document store integration is active/on.
+
+`ebean.docstore.allowAllCertificates`
+Set to true such that the client allows connections to invalid/self signed SSL certificates.
+
+`ebean.docstore.bulkBatchSize`
+The default batch size to use for the Bulk API calls.
+
+`ebean.docstore.create`
+When true the Document store should create any document indexes that don't already exist.
+
+`ebean.docstore.dropCreate`
+When true the Document store should drop and re-create document indexes.
+
+`ebean.docstore.generateMapping`
+Set to true means Ebean will generate mapping files on startup.
+
+`ebean.docstore.mappingPath`
+Resource path for the Document store mapping files.
+
+`ebean.docstore.mappingSuffix`
+Suffix used for mapping files.
+
+`ebean.docstore.password`
+ Password credential that be used for authentication to document store.
+ 
+`ebean.docstore.pathToResources`
+Location of resources that mapping files are generated into.
+
+`ebean.docstore.persist`
+The default mode used by indexes. `DEFAULT|IGNORE|QUEUE|UPDATE`
+
+`ebean.docstore.url`
+The URL of the Document store server. For example: http://localhost:9200.
+
+`ebean.docstore.username`
+Credential that be used for authentication to document store.
+
+### Ebean Autotune
+
+`ebean.autoTune.mode`
+The autoTune mode `DEFAULT_OFF|DEFAULT_ON|DEFAULT_ONIFEMPTY`
+
+`ebean.autoTune.profiling`
+TODO
+
+`ebean.autoTune.profilingBase`
+TODO
+
+`ebean.autoTune.profilingFile`
+TODO
+
+`ebean.autoTune.profilingRate`
+TODO
+
+`ebean.autoTune.profilingUpdateFrequency`
+TODO
+
+`ebean.autoTune.queryTuning`
+TODO
+
+`ebean.autoTune.queryTuningAddVersion`
+TODO
+
+`ebean.autoTune.queryTuningFile`
+TODO
+
+`ebean.autoTune.skipGarbageCollectionOnShutdown`
+TODO
+
+`ebean.autoTune.skipProfileReportingOnShutdown`
+TODO
+
+
+### Ebean options
+`ebean.allQuotedIdentifiers`
+Quote all identifiers
+
+`ebean.asOfSysPeriod`
+Column used to support history and 'As of' queries. This column is a timestamp range or equivalent.
+
+`ebean.asOfViewSuffix`
+Suffix appended to the base table to derive the view that contains the union of the base table and the history table in order to support asOf queries.
+
+`ebean.autoCommitMode`
+Set to true if the DataSource uses autoCommit. Indicates that Ebean should use autoCommit friendly Transactions and TransactionManager.
+
+`ebean.autoReadOnlyDataSource`
+When true create a read only DataSource using readOnlyDataSourceConfig defaulting values from dataSourceConfig
+
+`ebean.autostart`
+Should the server start all
+
+`ebean.backgroundExecutorSchedulePoolSize`
+TODO
+
+`ebean.backgroundExecutorShutdownSecs`
+TODO
+
+and some more todos:
+`ebean.batch.mode`
+`ebean.batch.size`
+`ebean.changeLogAsync`
+`ebean.changeLogIncludeInserts`
+`ebean.classes`
+`ebean.collectQueryOrigins`
+`ebean.collectQueryStatsByNode`
+`ebean.currentUserProvider`
+`ebean.dataSourceJndiName`
+`ebean.dataTimeZone`
+`ebean.databaseBooleanFalse`
+`ebean.databaseBooleanTrue`
+`ebean.databasePlatform`
+`ebean.databasePlatformName`
+`ebean.databaseSequenceBatchSize`
+ebean.datasource.h2.adminpassword
+ebean.datasource.h2.adminusername
+`ebean.dbEncrypt`
+`ebean.dbOffline`
+ebean.ddl.createOnly
+ebean.ddl.generate
+ebean.ddl.header
+ebean.ddl.initSql
+ebean.ddl.run
+ebean.ddl.seedSql
+ebean.defaultDeleteMissingChildren
+ebean.defaultOrderById
+ebean.disableClasspathSearch
+ebean.disableL2Cache
+ebean.docStoreOnly
+ebean.docstore.active
+ebean.docstore.allowAllCertificates
+ebean.docstore.bulkBatchSize
+ebean.docstore.create
+ebean.docstore.dropCreate
+ebean.docstore.generateMapping
+ebean.docstore.mappingPath
+ebean.docstore.mappingSuffix
+ebean.docstore.password
+ebean.docstore.pathToResources
+ebean.docstore.persist
+ebean.docstore.url
+ebean.docstore.username
+ebean.encryptDeployManager
+ebean.encryptKeyManager
+ebean.encryptor
+ebean.explicitTransactionBeginMode
+ebean.expressionEqualsWithNullAsNoop
+ebean.expressionNativeIlike
+ebean.geometrySRID
+ebean.historyTableSuffix
+ebean.jdbcFetchSizeFindEach
+ebean.jdbcFetchSizeFindList
+ebean.jodaLocalTimeMode
+ebean.jsonDateTime
+ebean.jsonInclude
+ebean.lazyLoadBatchSize
+ebean.localTimeWithNanos
+ebean.namingConvention.schema
+ebean.namingConvention.sequenceFormat
+ebean.namingConvention.useForeignKeyPrefix
+ebean.namingconvention
+ebean.notifyL2CacheInForeground
+ebean.packages
+ebean.persistBatch
+ebean.persistBatchOnCascade
+ebean.persistBatchSize
+ebean.persistBatching
+ebean.persistenceContextScope
+ebean.profiling
+ebean.profiling.directory
+ebean.profiling.includeProfileIds
+ebean.profiling.minimumMicros
+ebean.profiling.profilesPerFile
+ebean.profiling.verbose
+ebean.queryBatchSize
+ebean.queryPlanTTLSeconds
+ebean.search.packages
+ebean.serverCachePlugin
+ebean.skipCacheAfterWrite
+ebean.slowQueryMillis
+ebean.tenant.catalogProvider
+ebean.tenant.currentTenantProvider
+ebean.tenant.mode
+ebean.tenant.partitionColumn
+ebean.tenant.schemaProvider
+ebean.updateAllPropertiesInBatch
+ebean.updateChangesOnly
+ebean.updatesDeleteMissingChildren
+ebean.useJavaxValidationNotNull
+ebean.useJtaTransactionManager
+

howto-test.md

@@ -0,0 +1,153 @@
+This is a short description how to run tests
+============================================
+
+Run tests from maven
+--------------------
+
+Just type `mvn test` - it will run the whole test suite with the settings
+from `src/test/resources/ebean.properties`. 
+
+Run tests from eclipse
+----------------------
+
+Running tests requires, that the classes are enhanced. By default, the 
+`BaseTestCase` tries to load the enhancer-agent in a very early stage. This 
+also works for most test cases, but it does not work if you try to run a 
+complete test-suite, as classes that are loaded before the enhancer-agent 
+kicks in will not get enhanced. To solve this problem, you need either the
+[Eclipse-Enhancer-Plugin](https://github.com/ebean-orm-tools/ebean-eclipse-enhancer) 
+or add the agent to your JVM arguments (Preferences->Installed JREs) or to
+your run configuration: 
+`-javaagent:<USER_HOME>/.m2/repository/io/ebean/ebean-agent/<VERSION>/ebean-agent-<VERSION>.jar=debug=0`
+
+
+Platform Tests
+==============
+
+By default, the `h2` platform is used. To test a different platform, add 
+`-Ddatasource.default=xxx` to your maven command or JVM arguments.
+
+'h2' platform
+-------------
+
+Reqires no setup
+
+run: `mvn clean test`
+
+Current status: PASS
+Tests run: 1986, Failures: 0, Errors: 0, Skipped: 16
+
+'pg' platform
+-------------
+
+Reqirements
+- a locally installed PostgreSQL server with PostGis.
+- Create a user "unit" with password "unit" and a database "unit"
+- Give the user all permissions to that db
+
+run: `mvn clean test -Ddatasource.default=pg`
+
+Current status: PASS
+Tests run: 2166, Failures: 0, Errors: 0, Skipped: 25
+
+
+
+'mysql' platform
+-------------
+
+Reqirements
+- a locally installed MySQL server.
+- Create a user "unit" with password "unit" and a database "unit"
+- Give the user all permissions to that db
+
+run: `mvn clean test -Ddatasource.default=mysql`
+
+Current status: PASS
+Tests run: 2166, Failures: 0, Errors: 0, Skipped: 33
+
+
+
+'sqlserver' platform
+--------------------
+
+Reqires an installed sqlserver - e.g. https://hub.docker.com/r/microsoft/mssql-server-linux/
+
+- Create a user "ebean" with password "ebean" and a database "ebean_unittest"
+- Adjust the connection string and/or username in ebean.properties
+  
+run: `mvn clean test -Ddatasource.default=mssql`
+
+Current status: PASS
+Tests run: 2166, Failures: 0, Errors: 0, Skipped: 39
+
+
+
+'oracle' platform
+-----------------
+
+Reqires a locally installed Oracle server.
+- Create a user "unit" with password "unit" with all permissions
+- The test wirtes directly to the "xe" SID - so do not use a productive server!
+- As the Oracle JDBC driver is only available on an oracle repository,
+  you need a special maven setup as described [here](http://docs.oracle.com/middleware/1213/core/MAVEN/config_maven_repo.htm#MAVEN9010)
+  
+run: `mvn clean test -Ddatasource.default=ora -Poracle`
+
+Current status: FAIL
+Tests run: 1986, Failures: 17, Errors: 34, Skipped: 16
+
+
+
+'db2' platform
+--------------
+
+Reqires a locally installed DB2 Express-C server.
+- Create a user "unit" with password "unit" with all permissions
+- Install the db2jcc4 driver (see pom.xml)
+
+run: `mvn clean test -Ddatasource.default=db2 -Pdb2`
+
+Current status: FAIL
+Tests run: 2166, Failures: 29, Errors: 58, Skipped: 30
+
+
+'sqlite' platform
+-----------------
+
+Reqires no setup
+
+run: `mvn clean test -Ddatasource.default=sqlite`
+
+Current status: FAIL
+Tests run: 1986, Failures: 24, Errors: 86, Skipped: 16
+
+After some time, the db locks up, every test takes 3 seconds and fails with 
+"the database file is locked"
+
+
+
+'hsqldb' platform
+-----------------
+
+Reqires no setup
+
+run: `mvn clean test -Ddatasource.default=hsqldb`
+
+Current status: FAIL
+Tests run: 1980, Failures: 3, Errors: 657, Skipped: 16
+
+
+@Rob FYI
+The problem is https://sourceforge.net/p/hsqldb/bugs/1364/
+In `InsertHandler.getPstmt` the `meta.getIdentityDbColumns()` contains
+'id' in lowercase. Changing that to uppercase gives me this result:
+`Tests run: 1986, Failures: 2, Errors: 18, Skipped: 16`
+(as quick hack I added temporary a toUpperCase to BindableIdScalar.getIdentityColumn)
+
+
+'sqlanywhere' platform
+----------------------
+
+TODO: not yet tested
+
+

pom.xml

@@ -9,7 +9,7 @@
 
   <groupId>io.ebean</groupId>
   <artifactId>ebean</artifactId>
-  <version>10.3.2</version>
+  <version>11.15.1</version>
   <packaging>jar</packaging>
 
   <name>ebean</name>
@@ -17,15 +17,90 @@
 
   <scm>
     <developerConnection>scm:git:git@github.com:ebean-orm/ebean.git</developerConnection>
-    <tag>ebean-10.3.2</tag>
+    <tag>ebean-11.15.1</tag>
   </scm>
 
+  <profiles>
+    <profile>
+      <!-- Note: to use this profile, you need credentials for the oracle repository in your
+        settings.xml as described here:
+        http://docs.oracle.com/middleware/1213/core/MAVEN/config_maven_repo.htm#MAVEN9010 -->
+      <id>oracle</id>
+      <dependencies>
+        <dependency>
+          <groupId>com.oracle.jdbc</groupId>
+          <artifactId>ojdbc8</artifactId>
+          <version>12.2.0.1</version>
+          <scope>test</scope>
+        </dependency>
+      </dependencies>
+      <repositories>
+        <repository>
+          <id>maven.oracle.com</id>
+          <releases>
+            <enabled>true</enabled>
+          </releases>
+          <snapshots>
+            <enabled>false</enabled>
+          </snapshots>
+          <url>https://maven.oracle.com</url>
+          <layout>default</layout>
+        </repository>
+      </repositories>
+    </profile>
+    <profile>
+      <!-- Note: to use this profile, you need to download manually the db2jcc4 driver.
+        After that, install it into your local maven repository:
+
+        mvn install:install-file \
+          -Dfile=db2jcc4.jar \
+          -DgroupId=com.ibm.jdbc \
+          -DartifactId=db2jcc4 \
+          -Dversion=4.23.42 \
+          -Dpackaging=jar
+      -->
+      <id>db2</id>
+      <dependencies>
+        <dependency>
+          <groupId>com.ibm.jdbc</groupId>
+          <artifactId>db2jcc4</artifactId>
+          <version>4.23.42</version>
+          <scope>test</scope>
+        </dependency>
+      </dependencies>
+    </profile>
+  </profiles>
   <dependencies>
 
+    <!--
+    Projects are expected to explicit depend on version
+    of slf4j that they want to use
+    -->
     <dependency>
-      <groupId>org.jetbrains</groupId>
-      <artifactId>annotations</artifactId>
-      <version>13.0</version>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+      <version>1.7.25</version>
+      <scope>provided</scope>
+    </dependency>
+
+    <!--
+    Exclude snakeyaml if you desire - it is not strictly required.
+    -->
+    <dependency>
+      <groupId>org.yaml</groupId>
+      <artifactId>snakeyaml</artifactId>
+      <version>1.19</version>
+    </dependency>
+
+    <!--
+    Class retention Nonnull and Nullable annotations
+    to assist with IDE auto-completion with Ebean API
+    -->
+    <dependency>
+      <groupId>io.ebean</groupId>
+      <artifactId>ebean-jsr305</artifactId>
+      <version>1.1</version>
+      <scope>provided</scope>
     </dependency>
 
     <dependency>
@@ -37,63 +112,45 @@
     <dependency>
       <groupId>io.ebean</groupId>
       <artifactId>ebean-annotation</artifactId>
-      <version>2.3</version>
-    </dependency>
-
-    <dependency>
-      <groupId>org.avaje</groupId>
-      <artifactId>avaje-datasource-api</artifactId>
-      <version>1.1</version>
+      <version>3.11</version>
     </dependency>
 
     <dependency>
       <groupId>org.avaje</groupId>
       <artifactId>avaje-datasource</artifactId>
-      <version>2.1.1</version>
-    </dependency>
-
-    <dependency>
-      <groupId>org.avaje</groupId>
-      <artifactId>avaje-classpath-scanner-api</artifactId>
-      <version>2.2</version>
+      <version>3.1.1</version>
     </dependency>
 
     <dependency>
       <groupId>org.avaje</groupId>
       <artifactId>avaje-classpath-scanner</artifactId>
-      <version>2.2.2</version>
+      <version>3.1.1</version>
     </dependency>
 
     <dependency>
       <groupId>io.ebean</groupId>
-      <artifactId>ebean-dbmigration</artifactId>
-      <version>10.1.9</version>
-    </dependency>
-
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-api</artifactId>
-      <version>[1.7.1,1.7.99)</version>
+      <artifactId>ebean-migration</artifactId>
+      <version>11.5.1</version>
     </dependency>
 
     <dependency>
       <groupId>org.antlr</groupId>
       <artifactId>antlr4-runtime</artifactId>
-      <version>4.6</version>
+      <version>4.7.1</version>
     </dependency>
 
     <!-- Jackson core used internally by Ebean -->
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
-      <version>2.6.5</version>
+      <version>2.9.0</version>
     </dependency>
 
     <!-- provided scope for JsonNode support -->
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
-      <version>2.6.5</version>
+      <version>2.9.0</version>
       <scope>provided</scope>
     </dependency>
 
@@ -143,12 +200,19 @@
       <!--<scope>test</scope>-->
     <!--</dependency>-->
 
-    <!--<dependency>-->
-      <!--<groupId>microsoft</groupId>-->
-      <!--<artifactId>sqlserver-jdbc</artifactId>-->
-      <!--<version>4.2</version>-->
-      <!--<scope>test</scope>-->
-    <!--</dependency>-->
+    <dependency>
+      <groupId>io.ebean</groupId>
+      <artifactId>ebean-docker-run</artifactId>
+      <version>1.5.1</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>ch.qos.logback</groupId>
+      <artifactId>logback-classic</artifactId>
+      <version>1.2.3</version>
+      <scope>test</scope>
+    </dependency>
 
     <dependency>
       <groupId>org.avaje</groupId>
@@ -160,7 +224,7 @@
     <dependency>
       <groupId>io.ebean</groupId>
       <artifactId>ebean-agent</artifactId>
-      <version>10.3.1</version>
+      <version>11.10.1</version>
       <scope>test</scope>
     </dependency>
 
@@ -169,7 +233,7 @@
     <dependency>
       <groupId>com.h2database</groupId>
       <artifactId>h2</artifactId>
-      <version>1.4.193</version>
+      <version>1.4.196</version>
       <scope>provided</scope>
     </dependency>
 
@@ -187,10 +251,18 @@
       <scope>test</scope>
     </dependency>
 
+    <dependency>
+      <groupId>com.microsoft.sqlserver</groupId>
+      <artifactId>mssql-jdbc</artifactId>
+      <version>6.1.3.jre8-preview</version>
+      <scope>test</scope>
+    </dependency>
+
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>6.0.5</version>
+      <!-- Do not upgrade to 6.0.6: https://bugs.mysql.com/bug.php?id=82896 -->
+      <version>5.1.43</version>
       <scope>test</scope>
     </dependency>
 
@@ -225,7 +297,7 @@
       <plugin>
         <groupId>io.ebean</groupId>
         <artifactId>ebean-maven-plugin</artifactId>
-        <version>10.3.1</version>
+        <version>11.10.1</version>
         <executions>
           <execution>
             <id>test</id>
@@ -258,6 +330,11 @@
               <name>datasource.default</name>
               <value>${datasource.default}</value>
             </property>
+            <property>
+              <!-- transfer dbClockDelta parameter -->
+              <name>dbClockDelta</name>
+              <value>${dbClockDelta}</value>
+            </property>
           </systemProperties>
         </configuration>
       </plugin>
@@ -282,7 +359,7 @@
           <overview>src/main/java/io/ebean/overview.html</overview>
           <source>1.8</source>
           <doclet>org.avaje.doclet.PygmentsDoclet</doclet>
-          <excludePackageNames>io.ebeaninternal.*:com.avaje.ebean.util:io.ebean.dbmigration.ddlgeneration:io.ebean.dbmigration.migration:io.ebean.dbmigration.migrationreader:io.ebean.dbmigration.model</excludePackageNames>
+          <excludePackageNames>io.ebeaninternal.*:com.avaje.ebean.util</excludePackageNames>
           <docletArtifact>
             <groupId>org.avaje</groupId>
             <artifactId>pygments-doclet</artifactId>

src/main/java/io/ebean/BeanFinder.java

@@ -0,0 +1,169 @@
+package io.ebean;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * Provides finder functionality for use with "Dependency Injection style" use of Ebean.
+ * <p>
+ * Note that typically users would extend BeanRepository rather than BeanFinder.
+ * </p>
+ * <pre>{@code
+ *
+ * public class CustomerFinder extends BeanFinder<Long,Customer> {
+ *
+ *   @Inject
+ *   public CustomerFinder(EbeanServer server) {
+ *     super(Customer.class, server);
+ *   }
+ *
+ *   // ... add customer specific finders
+ * }
+ *
+ * }</pre>
+ *
+ * @param <I> The ID type
+ * @param <T> The Bean type
+ */
+public abstract class BeanFinder<I,T> {
+
+  protected final EbeanServer server;
+
+  protected final Class<T> type;
+
+  /**
+   * Create with the given bean type and EbeanServer instance.
+   *
+   * @param type The bean type
+   * @param server The EbeanServer instance typically created via Spring factory or equivalent.
+   */
+  protected BeanFinder(Class<T> type, EbeanServer server) {
+    this.type = type;
+    this.server = server;
+  }
+
+  /**
+   * Return the EbeanServer to use.
+   */
+  public EbeanServer db() {
+    return server;
+  }
+
+  /**
+   * Return the current transaction.
+   */
+  public Transaction currentTransaction() {
+    return db().currentTransaction();
+  }
+
+  /**
+   * Flush the JDBC batch on the current transaction.
+   */
+  public void flush() {
+    db().flush();
+  }
+
+  /**
+   * Return typically a different EbeanServer to the default.
+   * <p>
+   * This is equivalent to {@link Ebean#getServer(String)}
+   *
+   * @param server The name of the EbeanServer. If this is null then the default EbeanServer is
+   *               returned.
+   */
+  public EbeanServer db(String server) {
+    return Ebean.getServer(server);
+  }
+
+  /**
+   * Creates an entity reference for this ID.
+   * <p>
+   * Equivalent to {@link EbeanServer#getReference(Class, Object)}
+   */
+  @Nonnull
+  public T ref(I id) {
+    return db().getReference(type, id);
+  }
+
+  /**
+   * Retrieves an entity by ID.
+   * <p>
+   * Equivalent to {@link EbeanServer#find(Class, Object)}
+   */
+  @Nullable
+  public T findById(I id) {
+    return db().find(type, id);
+  }
+
+  /**
+   * Find an entity by ID returning an Optional.
+   */
+  @Nullable
+  public Optional<T> findByIdOrEmpty(I id) {
+    return db().find(type).setId(id).findOneOrEmpty();
+  }
+
+  /**
+   * Delete a bean by Id.
+   * <p>
+   * Equivalent to {@link EbeanServer#delete(Class, Object)}
+   */
+  public void deleteById(I id) {
+    db().delete(type, id);
+  }
+
+  /**
+   * Retrieves all entities of the given type.
+   */
+  @Nonnull
+  public List<T> findAll() {
+    return query().findList();
+  }
+
+  /**
+   * Creates an update query.
+   *
+   * <pre>{@code
+   *
+   *  int rows =
+   *      updateQuery()
+   *      .set("status", Customer.Status.ACTIVE)
+   *      .set("updtime", new Timestamp(System.currentTimeMillis()))
+   *      .where()
+   *        .gt("id", 1000)
+   *        .update();
+   *
+   * }</pre>
+   *
+   * <p>
+   * Equivalent to {@link EbeanServer#update(Class)}
+   */
+  protected UpdateQuery<T> updateQuery() {
+    return db().update(type);
+  }
+
+  /**
+   * Creates a query.
+   * <p>
+   * Equivalent to {@link EbeanServer#find(Class)}
+   */
+  protected Query<T> query() {
+    return db().find(type);
+  }
+
+  /**
+   * Creates a native sql query.
+   */
+  protected Query<T> nativeSql(String nativeSql) {
+    return db().findNative(type, nativeSql);
+  }
+
+  /**
+   * Creates a query using the ORM query language.
+   */
+  protected Query<T> query(String ormQuery) {
+    return db().createQuery(type, ormQuery);
+  }
+}

src/main/java/io/ebean/BeanRepository.java

@@ -0,0 +1,178 @@
+package io.ebean;
+
+import io.ebean.bean.EntityBean;
+
+/**
+ * Provides finder functionality for use with "Dependency Injection style" use of Ebean.
+ * <p>
+ * <pre>{@code
+ *
+ * @Repository
+ * public class CustomerRepository extends BeanRepository<Long,Customer> {
+ *
+ *   @Inject
+ *   public CustomerRepository(EbeanServer server) {
+ *     super(Customer.class, server);
+ *   }
+ *
+ *   // ... add customer specific finders and persist logic
+ *
+ *   public List<Customer> findByName(String nameStart) {
+ *     return query().where()
+ *             .istartsWith("name", nameStart)
+ *             .findList();
+ *   }
+ *
+ * }
+ * }</pre>
+ *
+ * @param <I> The ID type
+ * @param <T> The Bean type
+ */
+public abstract class BeanRepository<I, T> extends BeanFinder<I, T> {
+
+  /**
+   * Create with the given bean type and EbeanServer instance.
+   * <p>
+   * Typically users would extend BeanRepository rather than BeanFinder.
+   * </p>
+   * <pre>{@code
+   *
+   *   @Inject
+   *   public CustomerRepository(EbeanServer server) {
+   *     super(Customer.class, server);
+   *   }
+   *
+   * }</pre>
+   *
+   * @param type   The bean type
+   * @param server The EbeanServer instance typically created via Spring factory or equivalent
+   */
+  protected BeanRepository(Class<T> type, EbeanServer server) {
+    super(type, server);
+  }
+
+  /**
+   * Marks the entity bean as dirty.
+   * <p>
+   * This is used so that when a bean that is otherwise unmodified is updated the version
+   * property is updated.
+   * <p>
+   * An unmodified bean that is saved or updated is normally skipped and this marks the bean as
+   * dirty so that it is not skipped.
+   * <p>
+   * <pre>{@code
+   *
+   * Customer customer = customerRepository.byId(id);
+   *
+   * // mark the bean as dirty so that a save() or update() will
+   * // increment the version property
+   *
+   * customerRepository.markAsDirty(customer);
+   * customerRepository.save(customer);
+   *
+   * }</pre>
+   *
+   * @see EbeanServer#markAsDirty(Object)
+   */
+  public void markAsDirty(T bean) {
+    db().markAsDirty(bean);
+  }
+
+  /**
+   * Mark the property as unset or 'not loaded'.
+   * <p>
+   * This would be used to specify a property that we did not wish to include in a stateless update.
+   * </p>
+   * <pre>{@code
+   *
+   *   // populate an entity bean from JSON or whatever
+   *   Customer customer = ...;
+   *
+   *   // mark the email property as 'unset' so that it is not
+   *   // included in a 'stateless update'
+   *   customerRepository.markPropertyUnset(customer, "email");
+   *
+   *   customerRepository.update(customer);
+   *
+   * }</pre>
+   *
+   * @param propertyName the name of the property on the bean to be marked as 'unset'
+   */
+  public void markPropertyUnset(T bean, String propertyName) {
+    ((EntityBean) bean)._ebean_getIntercept().setPropertyLoaded(propertyName, false);
+  }
+
+  /**
+   * Insert or update this entity depending on its state.
+   * <p>
+   * Ebean will detect if this is a new bean or a previously fetched bean and perform either an
+   * insert or an update based on that.
+   *
+   * @see EbeanServer#save(Object)
+   */
+  public void save(T bean) {
+    db().save(bean);
+  }
+
+  /**
+   * Update this entity.
+   *
+   * @see EbeanServer#update(Object)
+   */
+  public void update(T bean) {
+    db().update(bean);
+  }
+
+  /**
+   * Insert this entity.
+   *
+   * @see EbeanServer#insert(Object)
+   */
+  public void insert(T bean) {
+    db().insert(bean);
+  }
+
+  /**
+   * Delete this bean.
+   * <p>
+   * This will return true if the bean was deleted successfully or JDBC batch is being used.
+   * </p>
+   * <p>
+   * If there is no current transaction one will be created and committed for
+   * you automatically.
+   * </p>
+   * <p>
+   * If the Bean does not have a version property (or loaded version property) and
+   * the bean does not exist then this returns false indicating that nothing was
+   * deleted. Note that, if JDBC batch mode is used then this always returns true.
+   * </p>
+   *
+   * @see EbeanServer#delete(Object)
+   */
+  public boolean delete(T bean) {
+    return db().delete(bean);
+  }
+
+  /**
+   * Delete a bean permanently without soft delete.
+   * <p>
+   * This is used when the bean contains a <code>@SoftDelete</code> property and we
+   * want to perform a hard/permanent delete.
+   * </p>
+   *
+   * @see EbeanServer#deletePermanent(Object)
+   */
+  public boolean deletePermanent(T bean) {
+    return db().deletePermanent(bean);
+  }
+
+  /**
+   * Refreshes this entity from the database.
+   *
+   * @see EbeanServer#refresh(Object)
+   */
+  public void refresh(T bean) {
+    db().refresh(bean);
+  }
+}

src/main/java/io/ebean/BeanState.java

@@ -1,6 +1,5 @@
 package io.ebean;
 
-import java.beans.PropertyChangeListener;
 import java.util.Map;
 import java.util.Set;
 
@@ -99,16 +98,6 @@ public interface BeanState {
    */
   void setReadOnly(boolean readOnly);
 
-  /**
-   * Add a propertyChangeListener.
-   */
-  void addPropertyChangeListener(PropertyChangeListener listener);
-
-  /**
-   * Remove a propertyChangeListener.
-   */
-  void removePropertyChangeListener(PropertyChangeListener listener);
-
   /**
    * Advanced - Used to programmatically build a partially or fully loaded
    * entity bean. First create an entity bean via

src/main/java/io/ebean/CacheMode.java

@@ -0,0 +1,93 @@
+package io.ebean;
+
+/**
+ * Enum to control the different cache modes for queryCache and beanCache.
+ * <h3>Bean cache</h3>
+ * <p>
+ * The bean cache is automatically used by default on <code>@Cache</code> beans for
+ * the following queries:
+ * </p>
+ * <ul>
+ * <li>findOne() by id</li>
+ * <li>findOne() by natural key(s)</li>
+ * <li>findList() by ids</li>
+ * </ul>
+ * <p>
+ * Bean caching needs to be explicitly turned on for queries that are findList() by natural keys.
+ * </p>
+ * <h3>Query cache</h3>
+ * <p>
+ * For query cache use note that you must be careful, what you do with the returned collection.
+ * By default the returned collections are read only and you will get an exception if you try
+ * to change them.
+ * If you add ".setReadOnly(false)" to your query, you'll get a collection that is a clone from the
+ * one in the cache. That means, changing does not affect the cache.
+ * </p>
+ *
+ * @author Roland Praml, FOCONIS AG
+ */
+public enum CacheMode {
+
+  /**
+   * Do not use cache.
+   */
+  OFF(false, false),
+
+  /**
+   * Use the cache and store a result when needed.
+   */
+  ON(true, true),
+
+  /**
+   * Only used for bean caching.
+   * <p>
+   * The bean cache is automatically used by default on <code>@Cache</code> beans for
+   * the following queries:
+   * </p>
+   * <ul>
+   * <li>findOne() by id</li>
+   * <li>findOne() by natural key(s)</li>
+   * <li>findList() by ids</li>
+   * </ul>
+   * <p>
+   * Bean caching needs to be explicitly turned on for queries that are findList() by natural keys.
+   * </p>
+   */
+  AUTO(true, true),
+
+  /**
+   * Do not read from cache, but put beans into the cache and invalidate parts of the cache as necessary.
+   * <p>
+   * Use this on a query if you want to get the fresh value from database and put it into the cache.
+   */
+  PUT(false, true),
+
+  /**
+   * GET only from the cache.
+   * <p>
+   * This mode does not put entries into the cache or invalidate parts of the cache.
+   */
+  GET(true, false);
+
+  private boolean get;
+  private boolean put;
+
+  CacheMode(boolean get, boolean put) {
+    this.get = get;
+    this.put = put;
+  }
+
+  /**
+   * Return true if value is read from cache.
+   */
+  public boolean isGet() {
+    return get;
+  }
+
+  /**
+   * Return true if a newly loaded value (from database) is put into the cache.
+   */
+  public boolean isPut() {
+    return put;
+  }
+}

src/main/java/io/ebean/CountDistinctOrder.java

@@ -0,0 +1,27 @@
+package io.ebean;
+/**
+ * Enumeration to use with {@link Query#setCountDistinct(CountDistinctOrder)}.
+ * @author Roland Praml, FOCONIS AG
+ *
+ */
+public enum CountDistinctOrder {
+  NO_ORDERING,
+  
+  /** order by attribute ascending */
+  ATTR_ASC, 
+  
+  /** order by attribute descending */
+  ATTR_DESC, 
+  
+  /** order by count ascending and attribute ascending */
+  COUNT_ASC_ATTR_ASC,
+  
+  /** order by count ascending and attribute descending */
+  COUNT_ASC_ATTR_DESC,
+  
+  /** order by count descending and attribute ascending */
+  COUNT_DESC_ATTR_ASC,
+  
+  /** order by count descending and attribute descending */
+  COUNT_DESC_ATTR_DESC,
+}

src/main/java/io/ebean/CountedValue.java

@@ -0,0 +1,33 @@
+package io.ebean;
+
+import java.io.Serializable;
+/**
+ * Holds a distinct value with it's count.
+ * (Used with {@link Query#findSingleAttributeList()} and {@link Query#setCountDistinct(CountDistinctOrder)}.)
+ * @author Roland Praml, FOCONIS AG
+ */
+public class CountedValue<A> implements Serializable {
+  private static final long serialVersionUID = -2267971668356749695L;
+
+  private final A value;
+  private final long count;
+
+  public CountedValue(A value, long count) {
+    this.value = value;
+    this.count = count;
+  }
+
+  public long getCount() {
+    return count;
+  }
+  
+  public A getValue() {
+    return value;
+  }
+  
+  @Override
+  public String toString() {
+    return count + ": " + value;
+  }
+  
+}

src/main/java/io/ebean/DocumentStore.java

@@ -2,7 +2,7 @@ package io.ebean;
 
 import io.ebeanservice.docstore.api.DocQueryRequest;
 import io.ebeanservice.docstore.api.RawDoc;
-import org.jetbrains.annotations.Nullable;
+import javax.annotation.Nullable;
 
 import java.io.IOException;
 import java.util.List;
@@ -56,7 +56,7 @@ public interface DocumentStore {
    * Return the bean by fetching it's content from the document store.
    * If the document is not found null is returned.
    * <p>
-   * Typically this is called indirectly by findUnique() on the query.
+   * Typically this is called indirectly by findOne() on the query.
    * </p>
    * <pre>{@code
    *
@@ -64,7 +64,7 @@ public interface DocumentStore {
    *   server.find(Customer.class)
    *     .setUseDocStore(true)
    *     .setId(42)
-   *     .findUnique();
+   *     .findOne();
    *
    * }</pre>
    */
@@ -123,11 +123,8 @@ public interface DocumentStore {
    *  server.find(Order.class)
    *    .setUseDocStore(true)
    *    .where()... // perhaps add predicates
-   *    .findEach(new QueryEachConsumer<Order>() {
-   *      @Override
-   *      public void accept(Order bean) {
-   *        // process the bean
-   *      }
+   *    .findEach((Order order) -> {
+   *      // process the bean ...
    *    });
    *
    * }</pre>
@@ -151,7 +148,7 @@ public interface DocumentStore {
    *  server.find(Order.class)
    *    .setUseDocStore(true)
    *    .where()... // perhaps add predicates
-   *    .findEachWhile(new QueryEachWhileConsumer<Order>() {
+   *    .findEachWhile(new Predicate<Order>() {
    *      @Override
    *      public void accept(Order bean) {
    *        // process the bean

src/main/java/io/ebean/DtoQuery.java

@@ -0,0 +1,133 @@
+package io.ebean;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.util.List;
+import java.util.Optional;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+
+/**
+ * Query for performing native SQL queries that return DTO Bean's.
+ * <p>
+ * These beans are just normal classes. They must have public constructors
+ * and setters.
+ * <p>
+ * Constructors with arguments are used if the number of constructor arguments
+ * matches the number of columns in the resultSet.
+ * </p>
+ * <p>
+ * If the number of columns in the resultSet is greater than the largest constructor
+ * then the largest constructor is used for the first columns and remaining columns
+ * are mapped by setter methods.
+ * </p>
+ *
+ * <pre>{@code
+ *
+ *   // CustomerDto is just a 'bean like' class
+ *   // with public constructor(s) and public setter methods
+ *
+ *   String sql = "select id, name from customer where name like :name and status_code = :status";
+ *
+ *   List<CustomerDto> beans =
+ *     Ebean.findDto(CustomrDto.class, sql)
+ *     .setParameter("name", "Acme%")
+ *     .setParameter("status", "ACTIVE")
+ *     .findList();
+ *
+ * }</pre>
+ */
+public interface DtoQuery<T> {
+
+  /**
+   * Execute the query returning a list.
+   */
+  @Nonnull
+  List<T> findList();
+
+  /**
+   * Execute the query iterating a row at a time.
+   * <p>
+   * This streaming type query is useful for large query execution as only 1 row needs to be held in memory.
+   * </p>
+   */
+  void findEach(Consumer<T> consumer);
+
+  /**
+   * Execute the query iterating a row at a time with the ability to stop consuming part way through.
+   * <p>
+   * Returning false after processing a row stops the iteration through the query results.
+   * </p>
+   * <p>
+   * This streaming type query is useful for large query execution as only 1 row needs to be held in memory.
+   * </p>
+   */
+  void findEachWhile(Predicate<T> consumer);
+
+  /**
+   * Execute the query returning a single bean.
+   */
+  @Nullable
+  T findOne();
+
+  /**
+   * Execute the query returning an optional bean.
+   */
+  @Nonnull
+  Optional<T> findOneOrEmpty();
+
+  /**
+   * The same as bind for named parameters.
+   */
+  DtoQuery<T> setParameter(String name, Object value);
+
+  /**
+   * The same as bind for positioned parameters.
+   */
+  DtoQuery<T> setParameter(int position, Object value);
+
+  /**
+   * Set the index of the first row of the results to return.
+   */
+  DtoQuery<T> setFirstRow(int firstRow);
+
+  /**
+   * Set the maximum number of query results to return.
+   */
+  DtoQuery<T> setMaxRows(int maxRows);
+
+  /**
+   * When resultSet columns are not able to be mapped to a bean property then instead of
+   * throwing effectively skip reading that column.
+   */
+  DtoQuery<T> setRelaxedMode();
+
+  /**
+   * Set a label on the query to make it easier to identify queries related to query execution statistics.
+   *
+   * @param label A label that is unique to the DTO bean type.
+   */
+  DtoQuery<T> setLabel(String label);
+
+  /**
+   * Set a timeout on this query.
+   * <p>
+   * This will typically result in a call to setQueryTimeout() on a
+   * preparedStatement. If the timeout occurs an exception will be thrown - this
+   * will be a SQLException wrapped up in a PersistenceException.
+   * </p>
+   *
+   * @param secs the query timeout limit in seconds. Zero means there is no limit.
+   */
+  DtoQuery<T> setTimeout(int secs);
+
+  /**
+   * A hint which for JDBC translates to the Statement.fetchSize().
+   * <p>
+   * Gives the JDBC driver a hint as to the number of rows that should be
+   * fetched from the database when more rows are needed for ResultSet.
+   * </p>
+   */
+  DtoQuery<T> setBufferFetchSizeHint(int bufferFetchSizeHint);
+
+}

src/main/java/io/ebean/Ebean.java

@@ -1,19 +1,24 @@
 package io.ebean;
 
+import io.ebean.annotation.TxIsolation;
 import io.ebean.cache.ServerCacheManager;
 import io.ebean.config.ServerConfig;
+import io.ebean.plugin.Property;
 import io.ebean.text.csv.CsvReader;
 import io.ebean.text.json.JsonContext;
-import org.jetbrains.annotations.Nullable;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import javax.persistence.OptimisticLockException;
 import javax.persistence.PersistenceException;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
@@ -112,6 +117,10 @@ import java.util.concurrent.ConcurrentHashMap;
 public final class Ebean {
   private static final Logger logger = LoggerFactory.getLogger(Ebean.class);
 
+  static {
+    EbeanVersion.getVersion(); // initalizes the version class and logs the version.
+  }
+
   /**
    * Manages creation and cache of EbeanServers.
    */
@@ -129,8 +138,7 @@ public final class Ebean {
     private final ConcurrentHashMap<String, EbeanServer> concMap = new ConcurrentHashMap<>();
 
     /**
-     * Cache for synchronized read, creation and put. Protected by the monitor
-     * object.
+     * Cache for synchronized read, creation and put. Protected by the monitor object.
      */
     private final HashMap<String, EbeanServer> syncMap = new HashMap<>();
 
@@ -144,14 +152,7 @@ public final class Ebean {
     private ServerManager() {
 
       try {
-        // skipDefaultServer is set by EbeanServerFactory
-        // ... when it is creating the primaryServer
-        if (PrimaryServer.isSkip()) {
-          // primary server being created by EbeanServerFactory
-          // ... so we should not try and create it here
-          logger.debug("PrimaryServer.isSkip()");
-
-        } else {
+        if (!PrimaryServer.isSkip()) {
           // look to see if there is a default server defined
           String defaultName = PrimaryServer.getDefaultServerName();
           logger.debug("defaultName:{}", defaultName);
@@ -289,7 +290,7 @@ public final class Ebean {
   }
 
   /**
-   * Backdoor for registering a mock implementation of EbeanServer as the default  server.
+   * Backdoor for registering a mock implementation of EbeanServer as the default server.
    */
   protected static EbeanServer mock(String name, EbeanServer server, boolean defaultServer) {
     EbeanServer originalPrimaryServer = serverMgr.defaultServer;
@@ -371,9 +372,10 @@ public final class Ebean {
   /**
    * Start a transaction typically specifying REQUIRES_NEW or REQUIRED semantics.
    * <p>
-   * Note that this provides an try finally alternative to using {@link #execute(TxScope, TxCallable)} or
-   * {@link #execute(TxScope, TxRunnable)}.
+   * Note that this provides an try finally alternative to using {@link #executeCall(TxScope, Callable)} or
+   * {@link #execute(TxScope, Runnable)}.
    * </p>
+   * <p>
    * <h3>REQUIRES_NEW example:</h3>
    * <pre>{@code
    * // Start a new transaction. If there is a current transaction
@@ -636,6 +638,16 @@ public final class Ebean {
     serverMgr.getDefaultServer().updateAll(beans);
   }
 
+  /**
+   * Merge the bean using the given merge options.
+   *
+   * @param bean    The bean to merge
+   * @param options The options to control the merge
+   */
+  public static void merge(Object bean, MergeOptions options) {
+    serverMgr.getDefaultServer().merge(bean, options);
+  }
+
   /**
    * Save all the beans from a Collection.
    */
@@ -643,6 +655,65 @@ public final class Ebean {
     return serverMgr.getDefaultServer().saveAll(beans);
   }
 
+  /**
+   * This method checks the uniqueness of a bean. I.e. if the save will work. It will return the
+   * properties that violates an unique / primary key. This may be done in an UI save action to
+   * validate if the user has entered correct values.
+   * <p>
+   * Note: This method queries the DB for uniqueness of all indices, so do not use it in a batch update.
+   * <p>
+   * Note: This checks only the root bean!
+   * <p>
+   * <pre>{@code
+   *
+   *   // there is a unique constraint on title
+   *
+   *   Document doc = new Document();
+   *   doc.setTitle("One flew over the cuckoo's nest");
+   *   doc.setBody("clashes with doc1");
+   *
+   *   Set<Property> properties = server().checkUniqueness(doc);
+   *
+   *   if (properties.isEmpty()) {
+   *     // it is unique ... carry on
+   *
+   *   } else {
+   *     // build a user friendly message
+   *     // to return message back to user
+   *
+   *     String uniqueProperties = properties.toString();
+   *
+   *     StringBuilder msg = new StringBuilder();
+   *
+   *     properties.forEach((it)-> {
+   *       Object propertyValue = it.getVal(doc);
+   *       String propertyName = it.getName();
+   *       msg.append(" property["+propertyName+"] value["+propertyValue+"]");
+   *     });
+   *
+   *     // uniqueProperties > [title]
+   *     //       custom msg > property[title] value[One flew over the cuckoo's nest]
+   *
+   *  }
+   *
+   * }</pre>
+   *
+   * @param bean The entity bean to check uniqueness on
+   * @return a set of Properties if constraint validation was detected or empty list.
+   */
+  @Nonnull
+  public static Set<Property> checkUniqueness(Object bean) {
+    return serverMgr.getDefaultServer().checkUniqueness(bean);
+  }
+
+  /**
+   * Same as {@link #checkUniqueness(Object)}. but with given transaction.
+   */
+  @Nonnull
+  public static Set<Property> checkUniqueness(Object bean, Transaction transaction) {
+    return serverMgr.getDefaultServer().checkUniqueness(bean, transaction);
+  }
+
   /**
    * Delete the bean.
    * <p>
@@ -822,7 +893,7 @@ public final class Ebean {
    * }</pre>
    * <p>
    * If you want more control over the query then you can use createQuery() and
-   * Query.findUnique();
+   * Query.findOne();
    * </p>
    * <pre>{@code
    *
@@ -843,7 +914,8 @@ public final class Ebean {
    *
    *   // traverse the object graph...
    *
-   *   Order order = query.findUnique();
+   *   Order order = query.findOne();
+   *
    *   Customer customer = order.getCustomer();
    *   Address shippingAddress = customer.getShippingAddress();
    *   List<OrderDetail> details = order.getDetails();
@@ -959,7 +1031,7 @@ public final class Ebean {
    * predicates, order by, limits etc.
    * </p>
    * <p>
-   * You then use findList(), findSet(), findMap() and findUnique() to execute
+   * You then use findList(), findSet(), findMap() and findOne() to execute
    * the query and return the collection or bean.
    * </p>
    * <p>
@@ -991,7 +1063,7 @@ public final class Ebean {
    *   Query<Order> query = Ebean.createQuery(Order.class, eql);
    *   query.setParameter("orderId", 2);
    *
-   *   Order order = query.findUnique();
+   *   Order order = query.findOne();
    *
    *   // This is the same as:
    *
@@ -1000,7 +1072,7 @@ public final class Ebean {
    *     .fetch("details")
    *     .fetch("detail.product", "name")
    *     .setId(2)
-   *     .findUnique();
+   *     .findOne();
    *
    * }</pre>
    *
@@ -1054,6 +1126,21 @@ public final class Ebean {
     return serverMgr.getDefaultServer().findNative(beanType, nativeSql);
   }
 
+  /**
+   * Create a Query for DTO beans.
+   * <p>
+   * DTO beans are just normal bean like classes with public constructor(s) and setters.
+   * They do not need to be registered with Ebean before use.
+   * </p>
+   *
+   * @param dtoType The type of the DTO bean the rows will be mapped into.
+   * @param sql     The SQL query to execute.
+   * @param <T>     The type of the DTO bean.
+   */
+  public static <T> DtoQuery<T> findDto(Class<T> dtoType, String sql) {
+    return serverMgr.getDefaultServer().findDto(dtoType, sql);
+  }
+
   /**
    * Create an Update query to perform a bulk update.
    * <p>
@@ -1181,20 +1268,20 @@ public final class Ebean {
    *
    * }</pre>
    */
-  public static void execute(TxScope scope, TxRunnable r) {
+  public static void execute(TxScope scope, Runnable r) {
     serverMgr.getDefaultServer().execute(scope, r);
   }
 
   /**
-   * Execute a TxRunnable in a Transaction with the default scope.
+   * Execute a Runnable in a Transaction with the default scope.
    * <p>
    * The default scope runs with REQUIRED and by default will rollback on any
    * exception (checked or runtime).
    * </p>
    * <pre>{@code
    *
-   *   Ebean.execute(new TxRunnable() {
-   *     public void run() {
+   *   Ebean.execute(() -> {
+   *
    *       User u1 = Ebean.find(User.class, 1);
    *       User u2 = Ebean.find(User.class, 2);
    *
@@ -1203,17 +1290,17 @@ public final class Ebean {
    *
    *       Ebean.save(u1);
    *       Ebean.save(u2);
-   *     }
+   *
    *   });
    *
    * }</pre>
    */
-  public static void execute(TxRunnable r) {
+  public static void execute(Runnable r) {
     serverMgr.getDefaultServer().execute(r);
   }
 
   /**
-   * Execute a TxCallable in a Transaction with an explicit scope.
+   * Execute a Callable in a Transaction with an explicit scope.
    * <p>
    * The scope can control the transaction type, isolation and rollback
    * semantics.
@@ -1223,7 +1310,7 @@ public final class Ebean {
    *   // set specific transactional scope settings
    *   TxScope scope = TxScope.requiresNew().setIsolation(TxIsolation.SERIALIZABLE);
    *
-   *   Ebean.execute(scope, new TxCallable<String>() {
+   *   Ebean.executeCall(scope, new Callable<String>() {
    * 	   public String call() {
    * 		   User u1 = Ebean.find(User.class, 1);
    * 		   ...
@@ -1233,12 +1320,12 @@ public final class Ebean {
    *
    * }</pre>
    */
-  public static <T> T execute(TxScope scope, TxCallable<T> c) {
-    return serverMgr.getDefaultServer().execute(scope, c);
+  public static <T> T executeCall(TxScope scope, Callable<T> c) {
+    return serverMgr.getDefaultServer().executeCall(scope, c);
   }
 
   /**
-   * Execute a TxCallable in a Transaction with the default scope.
+   * Execute a Callable in a Transaction with the default scope.
    * <p>
    * The default scope runs with REQUIRED and by default will rollback on any
    * exception (checked or runtime).
@@ -1249,8 +1336,8 @@ public final class Ebean {
    * </p>
    * <pre>{@code
    *
-   *   Ebean.execute(new TxCallable<String>() {
-   *     public String call() {
+   *   Ebean.executeCall(() -> {
+   *
    *       User u1 = Ebean.find(User.class, 1);
    *       User u2 = Ebean.find(User.class, 2);
    *
@@ -1261,13 +1348,13 @@ public final class Ebean {
    *       Ebean.save(u2);
    *
    *       return u1.getEmail();
-   *     }
+   *
    *   });
    *
    * }</pre>
    */
-  public static <T> T execute(TxCallable<T> c) {
-    return serverMgr.getDefaultServer().execute(c);
+  public static <T> T executeCall(Callable<T> c) {
+    return serverMgr.getDefaultServer().executeCall(c);
   }
 
   /**

src/main/java/io/ebean/EbeanServer.java

@@ -1,13 +1,16 @@
 package io.ebean;
 
+import io.ebean.annotation.TxIsolation;
 import io.ebean.cache.ServerCacheManager;
 import io.ebean.config.ServerConfig;
 import io.ebean.meta.MetaInfoManager;
+import io.ebean.plugin.Property;
 import io.ebean.plugin.SpiServer;
 import io.ebean.text.csv.CsvReader;
 import io.ebean.text.json.JsonContext;
-import org.jetbrains.annotations.Nullable;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import javax.persistence.NonUniqueResultException;
 import javax.persistence.OptimisticLockException;
 import javax.persistence.PersistenceException;
@@ -16,6 +19,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.concurrent.Callable;
 import java.util.function.Consumer;
 import java.util.function.Predicate;
 
@@ -238,7 +242,7 @@ public interface EbeanServer {
    *   Query<Order> query = Ebean.createQuery(Order.class, ormQuery);
    *   query.setParameter("orderId", 2);
    *
-   *   Order order = query.findUnique();
+   *   Order order = query.findOne();
    *
    *   // This is the same as:
    *
@@ -247,7 +251,7 @@ public interface EbeanServer {
    *     .fetch("details")
    *     .fetch("detail.product", "name")
    *     .setId(2)
-   *     .findUnique();
+   *     .findOne();
    *
    * }</pre>
    *
@@ -265,7 +269,7 @@ public interface EbeanServer {
    * predicates, order by, limits etc.
    * </p>
    * <p>
-   * You then use findList(), findSet(), findMap() and findUnique() to execute
+   * You then use findList(), findSet(), findMap() and findOne() to execute
    * the query and return the collection or bean.
    * </p>
    * <p>
@@ -285,7 +289,7 @@ public interface EbeanServer {
    *     .fetch("details")
    *     .fetch("detail.product", "name")
    *     .setId(2)
-   *     .findUnique();
+   *     .findOne();
    *
    *   // find some new orders ... with firstRow/maxRows
    *   List<Order> orders =
@@ -420,6 +424,19 @@ public interface EbeanServer {
    */
   <T> Update<T> createUpdate(Class<T> beanType, String ormUpdate);
 
+  /**
+   * Create a Query for DTO beans.
+   * <p>
+   * DTO beans are just normal bean like classes with public constructor(s) and setters.
+   * They do not need to be registered with Ebean before use.
+   * </p>
+   *
+   * @param dtoType The type of the DTO bean the rows will be mapped into.
+   * @param sql     The SQL query to execute.
+   * @param <T>     The type of the DTO bean.
+   */
+  <T> DtoQuery<T> findDto(Class<T> dtoType, String sql);
+
   /**
    * Create a SqlQuery for executing native sql
    * query statements.
@@ -560,8 +577,8 @@ public interface EbeanServer {
    * Start a transaction typically specifying REQUIRES_NEW or REQUIRED semantics.
    * <p>
    * <p>
-   * Note that this provides an try finally alternative to using {@link #execute(TxScope, TxCallable)} or
-   * {@link #execute(TxScope, TxRunnable)}.
+   * Note that this provides an try finally alternative to using {@link #executeCall(TxScope, Callable)} or
+   * {@link #execute(TxScope, Runnable)}.
    * </p>
    * <p>
    * <h3>REQUIRES_NEW example:</h3>
@@ -694,7 +711,7 @@ public interface EbeanServer {
    * <p>
    * <p>
    * If you want more control over the query then you can use createQuery() and
-   * Query.findUnique();
+   * Query.findOne();
    * </p>
    * <p>
    * <pre>{@code
@@ -714,7 +731,7 @@ public interface EbeanServer {
    *   query.fetch("details.product", "name");
    *
    *
-   *   Order order = query.findUnique();
+   *   Order order = query.findOne();
    *
    *   // traverse the object graph...
    *
@@ -730,6 +747,7 @@ public interface EbeanServer {
    * @param beanType the type of entity bean to fetch
    * @param id       the id value
    */
+  @Nullable
   <T> T find(Class<T> beanType, Object id);
 
   /**
@@ -773,6 +791,7 @@ public interface EbeanServer {
    * @param beanType the type of entity bean
    * @param id       the id value
    */
+  @Nonnull
   <T> T getReference(Class<T> beanType, Object id);
 
   /**
@@ -788,6 +807,7 @@ public interface EbeanServer {
    *
    * @see Query#findIds()
    */
+  @Nonnull
   <A, T> List<A> findIds(Query<T> query, Transaction transaction);
 
   /**
@@ -807,6 +827,7 @@ public interface EbeanServer {
    * @see Query#findEach(Consumer)
    * @see Query#findEachWhile(Predicate)
    */
+  @Nonnull
   <T> QueryIterator<T> findIterate(Query<T> query, Transaction transaction);
 
   /**
@@ -843,7 +864,7 @@ public interface EbeanServer {
    * Execute the query visiting the each bean one at a time.
    * <p>
    * Compared to findEach() this provides the ability to stop processing the query
-   * results early by returning false for the QueryEachWhileConsumer.
+   * results early by returning false for the Predicate.
    * </p>
    * <p>
    * Unlike findList() this is suitable for processing a query that will return
@@ -883,6 +904,7 @@ public interface EbeanServer {
    * It will execute the query against the history returning the versions of the bean.
    * </p>
    */
+  @Nonnull
   <T> List<Version<T>> findVersions(Query<T> query, Transaction transaction);
 
   /**
@@ -908,6 +930,7 @@ public interface EbeanServer {
    * @return the list of fetched beans.
    * @see Query#findList()
    */
+  @Nonnull
   <T> List<T> findList(Query<T> query, Transaction transaction);
 
   /**
@@ -923,6 +946,7 @@ public interface EbeanServer {
    * @return a Future object for the row count query
    * @see Query#findFutureCount()
    */
+  @Nonnull
   <T> FutureRowCount<T> findFutureCount(Query<T> query, Transaction transaction);
 
   /**
@@ -938,6 +962,7 @@ public interface EbeanServer {
    * @return a Future object for the list of Id's
    * @see Query#findFutureIds()
    */
+  @Nonnull
   <T> FutureIds<T> findFutureIds(Query<T> query, Transaction transaction);
 
   /**
@@ -954,6 +979,7 @@ public interface EbeanServer {
    * @return a Future object for the list result of the query
    * @see Query#findFutureList()
    */
+  @Nonnull
   <T> FutureList<T> findFutureList(Query<T> query, Transaction transaction);
 
   /**
@@ -985,6 +1011,7 @@ public interface EbeanServer {
    * @return The PagedList
    * @see Query#findPagedList()
    */
+  @Nonnull
   <T> PagedList<T> findPagedList(Query<T> query, Transaction transaction);
 
   /**
@@ -1010,6 +1037,7 @@ public interface EbeanServer {
    * @return the set of fetched beans.
    * @see Query#findSet()
    */
+  @Nonnull
   <T> Set<T> findSet(Query<T> query, Transaction transaction);
 
   /**
@@ -1026,6 +1054,7 @@ public interface EbeanServer {
    * @return the map of fetched beans.
    * @see Query#findMap()
    */
+  @Nonnull
   <K, T> Map<K, T> findMap(Query<T> query, Transaction transaction);
 
   /**
@@ -1058,6 +1087,7 @@ public interface EbeanServer {
    * @return the list of values for the selected property
    * @see Query#findSingleAttributeList()
    */
+  @Nonnull
   <A, T> List<A> findSingleAttributeList(Query<T> query, Transaction transaction);
 
   /**
@@ -1085,18 +1115,9 @@ public interface EbeanServer {
   /**
    * Similar to findOne() but returns an Optional (rather than nullable).
    */
+  @Nonnull
   <T> Optional<T> findOneOrEmpty(Query<T> query, Transaction transaction);
 
-  /**
-   * Synonym for findOne().
-   * <p>
-   * This proceeded findOne which was introduced to better match spring data.
-   * This will be deprecated at some future point.
-   * </p>
-   */
-  @Nullable
-  <T> T findUnique(Query<T> query, Transaction transaction);
-
   /**
    * Execute as a delete query deleting the 'root level' beans that match the predicates
    * in the query.
@@ -1138,6 +1159,7 @@ public interface EbeanServer {
    * @return the list of fetched MapBean.
    * @see SqlQuery#findList()
    */
+  @Nonnull
   List<SqlRow> findList(SqlQuery query, Transaction transaction);
 
   /**
@@ -1166,7 +1188,7 @@ public interface EbeanServer {
    * result.
    * </p>
    * <p>
-   * Generally you are able to use {@link SqlQuery#findUnique()} rather than
+   * Generally you are able to use {@link SqlQuery#findOne()} rather than
    * explicitly calling this method. You could use this method if you wish to
    * explicitly control the transaction used for the query.
    * </p>
@@ -1174,21 +1196,11 @@ public interface EbeanServer {
    * @param query       the query to execute.
    * @param transaction the transaction to use (can be null).
    * @return the fetched MapBean or null if none was found.
-   * @see SqlQuery#findUnique()
+   * @see SqlQuery#findOne()
    */
   @Nullable
   SqlRow findOne(SqlQuery query, Transaction transaction);
 
-  /**
-   * Synonym for findOne().
-   * <p>
-   * This proceeded findOne which was introduced to better match spring data.
-   * This will be deprecated at some future point.
-   * </p>
-   */
-  @Nullable
-  SqlRow findUnique(SqlQuery query, Transaction transaction);
-
   /**
    * Either Insert or Update the bean depending on its state.
    * <p>
@@ -1462,6 +1474,61 @@ public interface EbeanServer {
    */
   int saveAll(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
 
+  /**
+   * This method checks the uniqueness of a bean. I.e. if the save will work. It will return the
+   * properties that violates an unique / primary key. This may be done in an UI save action to
+   * validate if the user has entered correct values.
+   * <p>
+   * Note: This method queries the DB for uniqueness of all indices, so do not use it in a batch update.
+   * <p>
+   * Note: This checks only the root bean!
+   * <p>
+   * <pre>{@code
+   *
+   *   // there is a unique constraint on title
+   *
+   *   Document doc = new Document();
+   *   doc.setTitle("One flew over the cuckoo's nest");
+   *   doc.setBody("clashes with doc1");
+   *
+   *   Set<Property> properties = server().checkUniqueness(doc);
+   *
+   *   if (properties.isEmpty()) {
+   *     // it is unique ... carry on
+   *
+   *   } else {
+   *     // build a user friendly message
+   *     // to return message back to user
+   *
+   *     String uniqueProperties = properties.toString();
+   *
+   *     StringBuilder msg = new StringBuilder();
+   *
+   *     properties.forEach((it)-> {
+   *       Object propertyValue = it.getVal(doc);
+   *       String propertyName = it.getName();
+   *       msg.append(" property["+propertyName+"] value["+propertyValue+"]");
+   *     });
+   *
+   *     // uniqueProperties > [title]
+   *     //       custom msg > property[title] value[One flew over the cuckoo's nest]
+   *
+   *  }
+   *
+   * }</pre>
+   *
+   * @param bean The entity bean to check uniqueness on
+   * @return a set of Properties if constraint validation was detected or empty list.
+   */
+  @Nonnull
+  Set<Property> checkUniqueness(Object bean);
+
+  /**
+   * Same as {@link #checkUniqueness(Object)}. but with given transaction.
+   */
+  @Nonnull
+  Set<Property> checkUniqueness(Object bean, Transaction transaction);
+
   /**
    * Marks the entity bean as dirty.
    * <p>
@@ -1548,6 +1615,22 @@ public interface EbeanServer {
    */
   void updateAll(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
 
+  /**
+   * Merge the bean using the given merge options.
+   *
+   * @param bean    The bean to merge
+   * @param options The options to control the merge
+   */
+  void merge(Object bean, MergeOptions options);
+
+  /**
+   * Merge the bean using the given merge options and a transaction.
+   *
+   * @param bean    The bean to merge
+   * @param options The options to control the merge
+   */
+  void merge(Object bean, MergeOptions options, Transaction transaction);
+
   /**
    * Insert the bean.
    * <p>
@@ -1585,7 +1668,7 @@ public interface EbeanServer {
   int execute(CallableSql callableSql, Transaction transaction);
 
   /**
-   * Execute a TxRunnable in a Transaction with an explicit scope.
+   * Execute a Runnable in a Transaction with an explicit scope.
    * <p>
    * The scope can control the transaction type, isolation and rollback
    * semantics.
@@ -1596,7 +1679,7 @@ public interface EbeanServer {
    *   // set specific transactional scope settings
    *   TxScope scope = TxScope.requiresNew().setIsolation(TxIsolation.SERIALIZABLE);
    *
-   *   ebeanServer.execute(scope, new TxRunnable() {
+   *   ebeanServer.execute(scope, new Runnable() {
    * 	   public void run() {
    * 		   User u1 = Ebean.find(User.class, 1);
    * 		   ...
@@ -1605,10 +1688,10 @@ public interface EbeanServer {
    *
    * }</pre>
    */
-  void execute(TxScope scope, TxRunnable runnable);
+  void execute(TxScope scope, Runnable runnable);
 
   /**
-   * Execute a TxRunnable in a Transaction with the default scope.
+   * Execute a Runnable in a Transaction with the default scope.
    * <p>
    * The default scope runs with REQUIRED and by default will rollback on any
    * exception (checked or runtime).
@@ -1616,8 +1699,8 @@ public interface EbeanServer {
    * <p>
    * <pre>{@code
    *
-   *    ebeanServer.execute(new TxRunnable() {
-   *      public void run() {
+   *    ebeanServer.execute(() -> {
+   *
    *        User u1 = ebeanServer.find(User.class, 1);
    *        User u2 = ebeanServer.find(User.class, 2);
    *
@@ -1626,12 +1709,12 @@ public interface EbeanServer {
    *
    *        ebeanServer.save(u1);
    *        ebeanServer.save(u2);
-   *      }
+   *
    *    });
    *
    * }</pre>
    */
-  void execute(TxRunnable runnable);
+  void execute(Runnable runnable);
 
   /**
    * Execute a TxCallable in a Transaction with an explicit scope.
@@ -1645,7 +1728,7 @@ public interface EbeanServer {
    *   // set specific transactional scope settings
    *   TxScope scope = TxScope.requiresNew().setIsolation(TxIsolation.SERIALIZABLE);
    *
-   *   ebeanServer.execute(scope, new TxCallable<String>() {
+   *   ebeanServer.executeCall(scope, new Callable<String>() {
    * 	   public String call() {
    * 		   User u1 = ebeanServer.find(User.class, 1);
    * 		   ...
@@ -1655,7 +1738,7 @@ public interface EbeanServer {
    *
    * }</pre>
    */
-  <T> T execute(TxScope scope, TxCallable<T> callable);
+  <T> T executeCall(TxScope scope, Callable<T> callable);
 
   /**
    * Execute a TxCallable in a Transaction with the default scope.
@@ -1664,13 +1747,9 @@ public interface EbeanServer {
    * exception (checked or runtime).
    * </p>
    * <p>
-   * This is basically the same as TxRunnable except that it returns an Object
-   * (and you specify the return type via generics).
-   * </p>
-   * <p>
    * <pre>{@code
    *
-   *   ebeanServer.execute(new TxCallable<String>() {
+   *   ebeanServer.executeCall(new Callable<String>() {
    *     public String call() {
    *       User u1 = ebeanServer.find(User.class, 1);
    *       User u2 = ebeanServer.find(User.class, 2);
@@ -1687,7 +1766,7 @@ public interface EbeanServer {
    *
    * }</pre>
    */
-  <T> T execute(TxCallable<T> callable);
+  <T> T executeCall(Callable<T> callable);
 
   /**
    * Return the manager of the server cache ("L2" cache).

src/main/java/io/ebean/EbeanServerFactory.java

@@ -1,13 +1,14 @@
 package io.ebean;
 
-import io.ebean.common.SpiContainer;
 import io.ebean.config.ContainerConfig;
 import io.ebean.config.ServerConfig;
-import io.ebeaninternal.server.lib.ShutdownManager;
+import io.ebean.service.SpiContainer;
+import io.ebean.service.SpiContainerFactory;
 
 import javax.persistence.PersistenceException;
-import java.lang.reflect.Constructor;
+import java.util.Iterator;
 import java.util.Properties;
+import java.util.ServiceLoader;
 
 /**
  * Creates EbeanServer instances.
@@ -30,10 +31,12 @@ import java.util.Properties;
 public class EbeanServerFactory {
 
 
-  private static final String DEFAULT_CONTAINER = "io.ebeaninternal.server.core.DefaultContainer";
-
   private static SpiContainer container;
 
+  static {
+    EbeanVersion.getVersion(); // initalizes the version class and logs the version.
+  }
+
   /**
    * Initialise the container with clustering configuration.
    * <p>
@@ -66,10 +69,8 @@ public class EbeanServerFactory {
 
     EbeanServer server = createInternal(config);
 
-    if (config.isDefaultServer()) {
-      PrimaryServer.setSkip(true);
-    }
     if (config.isRegister()) {
+      PrimaryServer.setSkip(true);
       Ebean.register(server, config.isDefaultServer());
     }
 
@@ -99,7 +100,7 @@ public class EbeanServerFactory {
    * </p>
    */
   public static synchronized void shutdown() {
-    ShutdownManager.shutdown();
+    container.shutdown();
   }
 
 
@@ -135,14 +136,10 @@ public class EbeanServerFactory {
    */
   protected static SpiContainer createContainer(ContainerConfig containerConfig) {
 
-    String implClassName = System.getProperty("ebean.container", DEFAULT_CONTAINER);
-
-    try {
-      Class<?> cls = Class.forName(implClassName);
-      Constructor<?> constructor = cls.getConstructor(ContainerConfig.class);
-      return (SpiContainer) constructor.newInstance(containerConfig);
-    } catch (Exception ex) {
-      throw new RuntimeException(ex);
+    Iterator<SpiContainerFactory> factories = ServiceLoader.load(SpiContainerFactory.class).iterator();
+    if (factories.hasNext()) {
+      return factories.next().create(containerConfig);
     }
+    throw new IllegalStateException("Service loader didn't find a SpiContainerFactory?");
   }
 }

src/main/java/io/ebean/EbeanVersion.java

@@ -0,0 +1,43 @@
+package io.ebean;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+/**
+ * Class to determine the ebean version. (
+ * @author Roland Praml, FOCONIS AG
+ *
+ */
+public class EbeanVersion {
+  private EbeanVersion() {
+    
+  }
+  private static final Logger logger = LoggerFactory.getLogger(EbeanVersion.class);
+  
+  private static String version = "unknown";
+  static {
+    try {
+      Properties prop = new Properties();
+      InputStream in = Ebean.class.getResourceAsStream("/META-INF/maven/io.ebean/ebean/pom.properties");
+      if (in != null) {
+        prop.load(in);
+        in.close();
+        version = prop.getProperty("version");
+      }
+      logger.info("ebean version: {}", version);
+    } catch (IOException e) {
+      logger.warn("Could not determine ebean version: {}", e.getMessage());
+    }
+  }
+  
+  /**
+   * Returns the ebean version (read from /META-INF/maven/io.ebean/ebean/pom.properties)
+   */
+  public static String getVersion() {
+    return version;
+  }
+  
+}

src/main/java/io/ebean/ExpressionFactory.java

@@ -246,6 +246,11 @@ public interface ExpressionFactory {
    */
   Expression icontains(String propertyName, String value);
 
+  /**
+   * In expression using pairs of value objects.
+   */
+  Expression inPairs(Pairs pairs);
+
   /**
    * In - property has a value in the array of values.
    */

src/main/java/io/ebean/ExpressionList.java

@@ -5,8 +5,9 @@ import io.ebean.search.MultiMatch;
 import io.ebean.search.TextCommonTerms;
 import io.ebean.search.TextQueryString;
 import io.ebean.search.TextSimple;
-import org.jetbrains.annotations.Nullable;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import javax.persistence.NonUniqueResultException;
 import java.sql.Timestamp;
 import java.util.Collection;
@@ -192,6 +193,7 @@ public interface ExpressionList<T> {
    *
    * @see Query#findList()
    */
+  @Nonnull
   List<T> findList();
 
   /**
@@ -199,6 +201,7 @@ public interface ExpressionList<T> {
    *
    * @see Query#findIds()
    */
+  @Nonnull
   <A> List<A> findIds();
 
   /**
@@ -214,6 +217,7 @@ public interface ExpressionList<T> {
    *
    * @see Query#findSet()
    */
+  @Nonnull
   Set<T> findSet();
 
   /**
@@ -221,6 +225,7 @@ public interface ExpressionList<T> {
    *
    * @see Query#findMap()
    */
+  @Nonnull
   <K> Map<K, T> findMap();
 
   /**
@@ -253,8 +258,27 @@ public interface ExpressionList<T> {
    *
    * @return the list of values for the selected property
    */
+  @Nonnull
   <A> List<A> findSingleAttributeList();
 
+  /**
+   * Execute a query returning a single value of a single property/column.
+   * <p>
+   * <pre>{@code
+   *
+   *  String name =
+   *    Ebean.find(Customer.class)
+   *      .select("name")
+   *      .where().eq("id", 42)
+   *      .findSingleAttribute();
+   *
+   * }</pre>
+   */
+  default <A> A findSingleAttribute() {
+    List<A> list = findSingleAttributeList();
+    return !list.isEmpty() ? list.get(0) : null;
+  }
+
   /**
    * Execute the query returning a single bean or null (if no matching
    * bean is found).
@@ -264,7 +288,7 @@ public interface ExpressionList<T> {
    * </p>
    *
    * @throws NonUniqueResultException if more than one result was found
-   * @see Query#findUnique()
+   * @see Query#findOne()
    */
   @Nullable
   T findOne();
@@ -272,18 +296,9 @@ public interface ExpressionList<T> {
   /**
    * Execute the query returning an optional bean.
    */
+  @Nonnull
   Optional<T> findOneOrEmpty();
 
-  /**
-   * Synonym for findOne().
-   * <p>
-   * This proceeded findOne which was introduced to better match spring data.
-   * This will be deprecated at some future point.
-   * </p>
-   */
-  @Nullable
-  T findUnique();
-
   /**
    * Execute find row count query in a background thread.
    * <p>
@@ -294,6 +309,7 @@ public interface ExpressionList<T> {
    *
    * @return a Future object for the row count query
    */
+  @Nonnull
   FutureRowCount<T> findFutureCount();
 
   /**
@@ -306,6 +322,7 @@ public interface ExpressionList<T> {
    *
    * @return a Future object for the list of Id's
    */
+  @Nonnull
   FutureIds<T> findFutureIds();
 
   /**
@@ -318,6 +335,7 @@ public interface ExpressionList<T> {
    *
    * @return a Future object for the list result of the query
    */
+  @Nonnull
   FutureList<T> findFutureList();
 
   /**
@@ -349,6 +367,7 @@ public interface ExpressionList<T> {
    * @return The PagedList
    * @see Query#findPagedList()
    */
+  @Nonnull
   PagedList<T> findPagedList();
 
   /**
@@ -358,6 +377,7 @@ public interface ExpressionList<T> {
    * It will execute the query against the history returning the versions of the bean.
    * </p>
    */
+  @Nonnull
   List<Version<T>> findVersions();
 
   /**
@@ -367,11 +387,13 @@ public interface ExpressionList<T> {
    * It will execute the query against the history returning the versions of the bean.
    * </p>
    */
+  @Nonnull
   List<Version<T>> findVersionsBetween(Timestamp start, Timestamp end);
 
   /**
    * Add some filter predicate expressions to the many property.
    */
+  @Nonnull
   ExpressionList<T> filterMany(String prop);
 
   /**
@@ -435,18 +457,67 @@ public interface ExpressionList<T> {
   Query<T> setMapKey(String mapKey);
 
   /**
-   * Set to true to use the query for executing this query.
+   * Set to true when this query should use the bean cache.
+   * <p>
+   * This is now the same as setUseBeanCache(CacheMode.ON) and will be deprecated.
+   * </p>
    *
    * @see Query#setUseCache(boolean)
    */
   Query<T> setUseCache(boolean useCache);
 
   /**
-   * Set to true to use the query for executing this query.
+   * Set the mode to use the bean cache when executing this query.
+   *
+   * @see Query#setBeanCacheMode(CacheMode)
+   */
+  Query<T> setBeanCacheMode(CacheMode beanCacheMode);
+
+  /**
+   * Set the {@link CacheMode} to use the query cache for executing this query.
    *
    * @see Query#setUseQueryCache(boolean)
    */
-  Query<T> setUseQueryCache(boolean useCache);
+  Query<T> setUseQueryCache(CacheMode useCache);
+
+  /**
+   * Extended version for setDistinct in conjunction with "findSingleAttributeList";
+   *
+   * <pre>{@code
+   *
+   *  List<CountedValue<Order.Status>> orderStatusCount =
+   *
+   *     Ebean.find(Order.class)
+   *      .select("status")
+   *      .where()
+   *      .gt("orderDate", LocalDate.now().minusMonths(3))
+   *
+   *      // fetch as single attribute with a COUNT
+   *      .setCountDistinct(CountDistinctOrder.COUNT_DESC_ATTR_ASC)
+   *      .findSingleAttributeList();
+   *
+   *     for (CountedValue<Order.Status> entry : orderStatusCount) {
+   *       System.out.println(" count:" + entry.getCount()+" orderStatus:" + entry.getValue() );
+   *     }
+   *
+   *   // produces
+   *
+   *   count:3 orderStatus:NEW
+   *   count:1 orderStatus:SHIPPED
+   *   count:1 orderStatus:COMPLETE
+   *
+   * }</pre>
+   */
+  Query<T> setCountDistinct(CountDistinctOrder orderBy);
+
+  /**
+   * Calls {@link #setUseQueryCache(CacheMode)} with <code>ON</code> or <code>OFF</code>.
+   *
+   * @see Query#setUseQueryCache(CacheMode)
+   */
+  default Query<T> setUseQueryCache(boolean enabled) {
+    return setUseQueryCache(enabled ? CacheMode.ON : CacheMode.OFF);
+  }
 
   /**
    * Set to true if this query should execute against the doc store.
@@ -474,6 +545,11 @@ public interface ExpressionList<T> {
    */
   Query<T> setDisableReadAuditing();
 
+  /**
+   * Set a label on the query (to help identify query execution statistics).
+   */
+  Query<T> setLabel(String label);
+
   /**
    * Add expressions to the having clause.
    * <p>
@@ -780,6 +856,11 @@ public interface ExpressionList<T> {
    */
   ExpressionList<T> icontains(String propertyName, String value);
 
+  /**
+   * In expression using pairs of value objects.
+   */
+  ExpressionList<T> inPairs(Pairs pairs);
+
   /**
    * In - using a subQuery.
    */
@@ -795,6 +876,36 @@ public interface ExpressionList<T> {
    */
   ExpressionList<T> in(String propertyName, Collection<?> values);
 
+  /**
+   * In - using a subQuery.
+   *
+   * This is exactly the same as in() and provided due to "in" being a Kotlin keyword
+   * (and hence to avoid the slightly ugly escaping when using in() in Kotlin)
+   */
+  default ExpressionList<T> isIn(String propertyName, Query<?> subQuery) {
+    return in(propertyName, subQuery);
+  }
+
+  /**
+   * In - property has a value in the array of values.
+   *
+   * This is exactly the same as in() and provided due to "in" being a Kotlin keyword
+   * (and hence to avoid the slightly ugly escaping when using in() in Kotlin)
+   */
+  default ExpressionList<T> isIn(String propertyName, Object... values) {
+    return in(propertyName, values);
+  }
+
+  /**
+   * In - property has a value in the collection of values.
+   *
+   * This is exactly the same as in() and provided due to "in" being a Kotlin keyword
+   * (and hence to avoid the slightly ugly escaping when using in() in Kotlin)
+   */
+  default ExpressionList<T> isIn(String propertyName, Collection<?> values) {
+    return in(propertyName, values);
+  }
+
   /**
    * Not In - property has a value in the array of values.
    */

src/main/java/io/ebean/Finder.java

@@ -1,6 +1,7 @@
 package io.ebean;
 
-import org.jetbrains.annotations.Nullable;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 
 import java.util.List;
 
@@ -27,7 +28,7 @@ import java.util.List;
  *   // Add your customer finder methods ...
  *
  *   public Customer byName(String name) {
- *     return query().eq("name", name).findUnique();
+ *     return query().eq("name", name).findOne();
  *   }
  *
  *   public List<Customer> findNew() {
@@ -92,6 +93,20 @@ public class Finder<I, T> {
     this.serverName = serverName;
   }
 
+  /**
+   * Return the current transaction.
+   */
+  public Transaction currentTransaction() {
+    return db().currentTransaction();
+  }
+
+  /**
+   * Flush the JDBC batch on the current transaction.
+   */
+  public void flush() {
+    db().flush();
+  }
+
   /**
    * Return the underlying 'default' EbeanServer.
    * <p>
@@ -118,6 +133,7 @@ public class Finder<I, T> {
    * <p>
    * Equivalent to {@link EbeanServer#getReference(Class, Object)}
    */
+  @Nonnull
   public T ref(I id) {
     return db().getReference(type, id);
   }
@@ -144,10 +160,33 @@ public class Finder<I, T> {
   /**
    * Retrieves all entities of the given type.
    */
+  @Nonnull
   public List<T> all() {
     return query().findList();
   }
 
+  /**
+   * Creates an update query.
+   *
+   * <pre>{@code
+   *
+   *  int rows =
+   *      finder.update()
+   *      .set("status", Customer.Status.ACTIVE)
+   *      .set("updtime", new Timestamp(System.currentTimeMillis()))
+   *      .where()
+   *        .gt("id", 1000)
+   *        .update();
+   *
+   * }</pre>
+   *
+   * <p>
+   * Equivalent to {@link EbeanServer#update(Class)}
+   */
+  public UpdateQuery<T> update() {
+    return db().update(type);
+  }
+
   /**
    * Creates a query.
    * <p>
@@ -170,4 +209,5 @@ public class Finder<I, T> {
   public Query<T> query(String ormQuery) {
     return db().createQuery(type, ormQuery);
   }
+
 }

src/main/java/io/ebean/MergeOptions.java

@@ -0,0 +1,29 @@
+package io.ebean;
+
+import java.util.Set;
+
+/**
+ * Options used to control a merge. Use MergeOptionsBuilder to create an instance.
+ * <p>
+ * Instances of MergeOptions are thread safe and safe to share across threads.
+ */
+public interface MergeOptions {
+
+  /**
+   * Returns true if Id values are supplied by the client.
+   * <p>
+   * This would be the case when for example a mobile creates data in it's own local database
+   * and then sync's. In this case often the id values are UUID.
+   */
+  boolean isClientGeneratedIds();
+
+  /**
+   * Return true if delete permanent should be used and false for 'normal' delete that allows soft deletes.
+   */
+  boolean isDeletePermanent();
+
+  /**
+   * Return the paths included in the merge.
+   */
+  Set<String> paths();
+}

src/main/java/io/ebean/MergeOptionsBuilder.java

@@ -0,0 +1,80 @@
+package io.ebean;
+
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+/**
+ * Builds a MergeOptions which is immutable and thread safe.
+ */
+public class MergeOptionsBuilder {
+
+  private Set<String> paths = new LinkedHashSet<>();
+
+  private boolean clientGeneratedIds;
+
+  private boolean deletePermanent = true;
+
+  /**
+   * Add a path that will included in the merge.
+   *
+   * @param path The path relative to the root type.
+   * @return The builder to chain another addPath() or build().
+   */
+  public MergeOptionsBuilder addPath(String path) {
+    paths.add(path);
+    return this;
+  }
+
+  /**
+   * Set to true if Id values are supplied by the client.
+   * <p>
+   * This would be the case when for example a mobile creates data in it's own local database
+   * and then sync's. In this case often the id values are UUID.
+   */
+  public MergeOptionsBuilder setClientGeneratedIds() {
+    this.clientGeneratedIds = true;
+    return this;
+  }
+
+  /**
+   * Set that deletions should use delete permanent (rather than default which allows soft deletes).
+   */
+  public MergeOptionsBuilder setDeletePermanent() {
+    this.deletePermanent = true;
+    return this;
+  }
+
+  /**
+   * Build and return the MergeOptions instance.
+   */
+  public MOptions build() {
+    return new MOptions(paths, clientGeneratedIds, deletePermanent);
+  }
+
+  private static class MOptions implements MergeOptions {
+
+    private final boolean clientGeneratedIds;
+    private final boolean deletePermanent;
+    private final Set<String> paths;
+
+    private MOptions(Set<String> paths, boolean clientGeneratedIds, boolean deletePermanent) {
+      this.paths = paths;
+      this.clientGeneratedIds = clientGeneratedIds;
+      this.deletePermanent = deletePermanent;
+    }
+
+    public Set<String> paths() {
+      return paths;
+    }
+
+    @Override
+    public boolean isClientGeneratedIds() {
+      return clientGeneratedIds;
+    }
+
+    @Override
+    public boolean isDeletePermanent() {
+      return deletePermanent;
+    }
+  }
+}

src/main/java/io/ebean/PagedList.java

@@ -1,5 +1,6 @@
 package io.ebean;
 
+import javax.annotation.Nonnull;
 import java.util.List;
 import java.util.concurrent.Future;
 
@@ -109,11 +110,13 @@ public interface PagedList<T> {
    *
    * }</pre>
    */
+  @Nonnull
   Future<Integer> getFutureCount();
 
   /**
    * Return the list of entities for this page.
    */
+  @Nonnull
   List<T> getList();
 
   /**

src/main/java/io/ebean/Pairs.java

@@ -0,0 +1,222 @@
+package io.ebean;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Holds a list of value object pairs.
+ * <p>
+ * This feature is to enable use of L2 cache with complex natural keys with findList() queries in cases where the
+ * IN clause is not a single property but instead a pair of properties.
+ * </p>
+ * <p>
+ * These queries can have predicates that can be translated into a list of complex natural keys such that the L2
+ * cache can be hit with these keys to obtain some or all of the beans from L2 cache rather than the DB.
+ * </p>
+ * <pre>{@code
+ *
+ *   // where a bean is annotated with a complex
+ *   // natural key made of several properties
+ *   @Cache(naturalKey = {"store","code","sku"})
+ *
+ *
+ *   Pairs pairs = new Pairs("sku", "code");
+ *   pairs.add("sj2", 1000);
+ *   pairs.add("sj2", 1001);
+ *   pairs.add("pf3", 1000);
+ *
+ *   List<OCachedNatKeyBean3> list = Ebean.find(OCachedNatKeyBean3.class)
+ *   .where()
+ *   .eq("store", "def")
+ *   .inPairs(pairs)       // IN clause with 'pairs' of values
+ *   .orderBy("sku desc")
+ *
+ *   // query expressions cover the natural key properties
+ *   // so we can choose to hit the L2 bean cache if we want
+ *   .setUseCache(true)
+ *   .findList();
+ *
+ * }</pre>
+ * <h3>Important implementation Note</h3>
+ * <p>
+ * When binding many pairs of values we want to be able to utilise a DB index (as this type of query usually means the
+ * pairs are a unique key/index or part of a unique key/index and highly selective). Currently we know we can do this
+ * on any DB that supports expression/formula based indexes.
+ * using a DB string concatenation formula
+ * </p>
+ * <p>
+ * This means, the implementation converts the list of pairs into a list of strings via concatenation and we use a
+ * DB concatenation formula to match. We see SQL like:
+ * </p>
+ * <pre>{@code sql
+ *
+ *   ...
+ *   where t0.store = ?  and (t0.sku||'-'||t0.code) in (?, ? )
+ *
+ *   // bind values like: "sj2-1000", "pf3-1000"
+ *
+ * }</pre>
+ * <p>
+ * We often create a DB expression index to match the DB concat formula like:
+ * </p>
+ * <pre>{@code sql
+ *
+ *   create index ix_name on table_name ((sku || '-' || code));
+ *
+ * }</pre>
+ */
+public class Pairs {
+
+  private final String property0;
+  private final String property1;
+
+  private final List<Entry> entries = new ArrayList<>();
+
+  /**
+   * Character between the values when combined via DB varchar concatenation.
+   */
+  private String concatSeparator = "-";
+
+  /**
+   * Optional suffix added to DB varchar concatenation formula.
+   */
+  private String concatSuffix;
+
+  /**
+   * Create with 2 property names.
+   *
+   * @param property0 The property of the first value
+   * @param property1 The property of the second value
+   */
+  public Pairs(String property0, String property1) {
+    this.property0 = property0;
+    this.property1 = property1;
+  }
+
+  /**
+   * Add a pair of value objects.
+   * <p>
+   * Both values are expected to be immutable with equals and hashCode implementations.
+   * </p>
+   *
+   * @param a Value of the first property
+   * @param b Value of the second property
+   */
+  public Pairs add(Object a, Object b) {
+    entries.add(new Entry(a, b));
+    return this;
+  }
+
+  /**
+   * Return the first property name.
+   */
+  public String getProperty0() {
+    return property0;
+  }
+
+  /**
+   * Return the second property name.
+   */
+  public String getProperty1() {
+    return property1;
+  }
+
+  /**
+   * Return all the value pairs.
+   */
+  public List<Entry> getEntries() {
+    return entries;
+  }
+
+  /**
+   * Return the separator character used with DB varchar concatenation to combine the 2 values.
+   */
+  public String getConcatSeparator() {
+    return concatSeparator;
+  }
+
+  /**
+   * Set the separator character used with DB varchar concatenation to combine the 2 values.
+   */
+  public Pairs setConcatSeparator(String concatSeparator) {
+    this.concatSeparator = concatSeparator;
+    return this;
+  }
+
+  /**
+   * Return  a suffix used with DB varchar concatenation to combine the 2 values.
+   */
+  public String getConcatSuffix() {
+    return concatSuffix;
+  }
+
+  /**
+   * Add a suffix used with DB varchar concatenation to combine the 2 values.
+   */
+  public Pairs setConcatSuffix(String concatSuffix) {
+    this.concatSuffix = concatSuffix;
+    return this;
+  }
+
+  @Override
+  public String toString() {
+    return "p0:" + property0 + " p1:" + property1 + " entries:" + entries;
+  }
+
+  /**
+   * A pair of 2 value objects.
+   * <p>
+   * Used to support inPairs() expression.
+   */
+  public static class Entry {
+
+    private final Object a;
+    private final Object b;
+
+    /**
+     * Create with values for property0 and property1 respectively.
+     *
+     * @param a Value of the first property
+     * @param b Value of the second property
+     */
+    public Entry(Object a, Object b) {
+      this.a = a;
+      this.b = b;
+    }
+
+    @Override
+    public String toString() {
+      return "{" + a + "," + b + "}";
+    }
+
+    /**
+     * Return the value for the first property.
+     */
+    public Object getA() {
+      return a;
+    }
+
+    /**
+     * Return the value for the second property.
+     */
+    public Object getB() {
+      return b;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+
+      Entry that = (Entry) o;
+      return a.equals(that.a) && b.equals(that.b);
+    }
+
+    @Override
+    public int hashCode() {
+      int result = a.hashCode();
+      result = 92821 * result + b.hashCode();
+      return result;
+    }
+  }
+}

src/main/java/io/ebean/PrimaryServer.java

@@ -1,6 +1,6 @@
 package io.ebean;
 
-import io.ebean.config.PropertyMap;
+import io.ebean.config.properties.PropertiesLoader;
 
 import java.util.Properties;
 
@@ -44,7 +44,7 @@ class PrimaryServer {
    */
   static synchronized Properties getProperties() {
     if (globalProperties == null) {
-      globalProperties = PropertyMap.defaultProperties();
+      globalProperties = PropertiesLoader.load();
     }
     if (defaultServerName == null) {
       defaultServerName = determineDefaultServerName();
@@ -59,6 +59,8 @@ class PrimaryServer {
   private static String determineDefaultServerName() {
 
     String defaultServerName = System.getenv("EBEAN_DB");
+    defaultServerName = System.getProperty("db", defaultServerName);
+    defaultServerName = System.getProperty("ebean_db", defaultServerName);
     if (isEmpty(defaultServerName)) {
       defaultServerName = System.getProperty("datasource.default");
       if (isEmpty(defaultServerName)) {
@@ -74,6 +76,7 @@ class PrimaryServer {
     if (defaultServerName == null) {
       defaultServerName = "db";
     }
+    System.setProperty("ebean_db", defaultServerName);
     return defaultServerName;
   }
 

src/main/java/io/ebean/ProfileLocation.java

@@ -0,0 +1,47 @@
+package io.ebean;
+
+/**
+ * A location for profiling transactions and queries.
+ * <p>
+ * Typically represents a class method in the form of class file and line of code that started
+ * the transaction or invoked the query.
+ * </p>
+ */
+public interface ProfileLocation {
+
+  /**
+   * Create and return a new ProfileLocation.
+   */
+  static ProfileLocation create() {
+    return XServiceProvider.profileLocationFactory().create();
+  }
+
+  /**
+   * Create and return a new ProfileLocation with a given lineNumber and label.
+   */
+  static ProfileLocation create(int lineNumber, String label) {
+    return XServiceProvider.profileLocationFactory().create(lineNumber, label);
+  }
+
+  /**
+   * Create and return a new ProfileLocation with a given location.
+   */
+  static ProfileLocation createAt(String location) {
+    return XServiceProvider.profileLocationFactory().createAt(location);
+  }
+
+  /**
+   * Obtain the location description.
+   */
+  String obtain();
+
+  /**
+   * Return a short version of the location description.
+   */
+  String shortDescription();
+
+  /**
+   * Add execution time.
+   */
+  void add(long executionTime);
+}

src/main/java/io/ebean/Query.java

@@ -1,7 +1,7 @@
 package io.ebean;
 
-import org.jetbrains.annotations.Nullable;
-
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import javax.persistence.NonUniqueResultException;
 import java.sql.Timestamp;
 import java.util.List;
@@ -215,11 +215,6 @@ public interface Query<T> {
     SKIPLOCKED
   }
 
-  /**
-   * Return the RawSql that was set to use for this query.
-   */
-  RawSql getRawSql();
-
   /**
    * Set RawSql to use for this query.
    */
@@ -241,6 +236,14 @@ public interface Query<T> {
    */
   Query<T> asDraft();
 
+  /**
+   * Convert the query to a DTO bean query.
+   * <p>
+   * We effectively use the underlying ORM query to build the SQL and then execute
+   * and map it into DTO beans.
+   */
+  <D> DtoQuery<D> asDto(Class<D> dtoClass);
+
   /**
    * Cancel the query execution if supported by the underlying database and
    * driver.
@@ -602,6 +605,7 @@ public interface Query<T> {
    *
    * @see EbeanServer#findIds(Query, Transaction)
    */
+  @Nonnull
   <A> List<A> findIds();
 
   /**
@@ -642,6 +646,7 @@ public interface Query<T> {
    *
    * }</pre>
    */
+  @Nonnull
   QueryIterator<T> findIterate();
 
   /**
@@ -669,8 +674,7 @@ public interface Query<T> {
    * </p>
    * <p>
    * This method is functionally equivalent to findIterate() but instead of using an
-   * iterator uses the QueryEachConsumer (SAM) interface which is better suited to use
-   * with Java8 closures.
+   * iterator uses the Consumer interface which is better suited to use with Java8 closures.
    * </p>
    * <pre>{@code
    *
@@ -699,8 +703,7 @@ public interface Query<T> {
    * </p>
    * <p>
    * This method is functionally equivalent to findIterate() but instead of using an
-   * iterator uses the QueryEachWhileConsumer (SAM) interface which is better suited to use
-   * with Java8 closures.
+   * iterator uses the Predicate (SAM) interface which is better suited to use with Java8 closures.
    * </p>
    * <pre>{@code
    *
@@ -740,6 +743,7 @@ public interface Query<T> {
    *
    * @see EbeanServer#findList(Query, Transaction)
    */
+  @Nonnull
   List<T> findList();
 
   /**
@@ -758,6 +762,7 @@ public interface Query<T> {
    *
    * @see EbeanServer#findSet(Query, Transaction)
    */
+  @Nonnull
   Set<T> findSet();
 
   /**
@@ -780,6 +785,7 @@ public interface Query<T> {
    *
    * @see EbeanServer#findMap(Query, Transaction)
    */
+  @Nonnull
   <K> Map<K, T> findMap();
 
   /**
@@ -812,8 +818,29 @@ public interface Query<T> {
    *
    * @return the list of values for the selected property
    */
+  @Nonnull
   <A> List<A> findSingleAttributeList();
 
+  /**
+   * Execute a query returning a single value of a single property/column.
+   * <p>
+   * <pre>{@code
+   *
+   *  String name =
+   *    Ebean.find(Customer.class)
+   *      .select("name")
+   *      .where().eq("id", 42)
+   *      .findSingleAttribute();
+   *
+   * }</pre>
+   */
+  <A> A findSingleAttribute();
+
+  /**
+   * Return true if this is countDistinct query.
+   */
+  boolean isCountDistinct();
+
   /**
    * Execute the query returning either a single bean or null (if no matching
    * bean is found).
@@ -831,7 +858,7 @@ public interface Query<T> {
    * Product product =
    *     ebeanServer.find(Product.class)
    *         .where().eq("sku", "aa113")
-   *         .findUnique();
+   *         .findOne();
    * ...
    * }</pre>
    * <p>
@@ -845,7 +872,7 @@ public interface Query<T> {
    *     ebeanServer.find(Order.class)
    *       .setId(1)
    *       .fetch("details")
-   *       .findUnique();
+   *       .findOne();
    *
    * // the order details were eagerly loaded
    * List<OrderDetail> details = order.getDetails();
@@ -860,18 +887,9 @@ public interface Query<T> {
   /**
    * Execute the query returning an optional bean.
    */
+  @Nonnull
   Optional<T> findOneOrEmpty();
 
-  /**
-   * Synonym for findOne().
-   * <p>
-   * This proceeded findOne which was introduced to better match spring data.
-   * This will be deprecated at some future point.
-   * </p>
-   */
-  @Nullable
-  T findUnique();
-
   /**
    * Return versions of a @History entity bean.
    * <p>
@@ -884,6 +902,7 @@ public interface Query<T> {
    * It will execute the query against the history returning the versions of the bean.
    * </p>
    */
+  @Nonnull
   List<Version<T>> findVersions();
 
   /**
@@ -893,6 +912,7 @@ public interface Query<T> {
    * It will execute the query against the history returning the versions of the bean.
    * </p>
    */
+  @Nonnull
   List<Version<T>> findVersionsBetween(Timestamp start, Timestamp end);
 
   /**
@@ -930,6 +950,7 @@ public interface Query<T> {
    *
    * @return a Future object for the row count query
    */
+  @Nonnull
   FutureRowCount<T> findFutureCount();
 
   /**
@@ -942,6 +963,7 @@ public interface Query<T> {
    *
    * @return a Future object for the list of Id's
    */
+  @Nonnull
   FutureIds<T> findFutureIds();
 
   /**
@@ -953,6 +975,7 @@ public interface Query<T> {
    *
    * @return a Future object for the list result of the query
    */
+  @Nonnull
   FutureList<T> findFutureList();
 
   /**
@@ -982,6 +1005,7 @@ public interface Query<T> {
    *
    * @return The PagedList
    */
+  @Nonnull
   PagedList<T> findPagedList();
 
   /**
@@ -1028,7 +1052,7 @@ public interface Query<T> {
   Query<T> setParameter(int position, Object value);
 
   /**
-   * Set the Id value to query. This is used with findUnique().
+   * Set the Id value to query. This is used with findOne().
    * <p>
    * You can use this to have further control over the query. For example adding
    * fetch joins.
@@ -1039,7 +1063,7 @@ public interface Query<T> {
    *     ebeanServer.find(Order.class)
    *     .setId(1)
    *     .fetch("details")
-   *     .findUnique();
+   *     .findOne();
    *
    * // the order details were eagerly fetched
    * List<OrderDetail> details = order.getDetails();
@@ -1261,6 +1285,37 @@ public interface Query<T> {
    */
   Query<T> setDistinct(boolean isDistinct);
 
+  /**
+   * Extended version for setDistinct in conjunction with "findSingleAttributeList";
+   *
+   * <pre>{@code
+   *
+   *  List<CountedValue<Order.Status>> orderStatusCount =
+   *
+   *     Ebean.find(Order.class)
+   *      .select("status")
+   *      .where()
+   *      .gt("orderDate", LocalDate.now().minusMonths(3))
+   *
+   *      // fetch as single attribute with a COUNT
+   *      .setCountDistinct(CountDistinctOrder.COUNT_DESC_ATTR_ASC)
+   *      .findSingleAttributeList();
+   *
+   *     for (CountedValue<Order.Status> entry : orderStatusCount) {
+   *       System.out.println(" count:" + entry.getCount()+" orderStatus:" + entry.getValue() );
+   *     }
+   *
+   *   // produces
+   *
+   *   count:3 orderStatus:NEW
+   *   count:1 orderStatus:SHIPPED
+   *   count:1 orderStatus:COMPLETE
+   *
+   * }</pre>
+   *
+   */
+  Query<T> setCountDistinct(CountDistinctOrder orderBy);
+
   /**
    * Return the first row value.
    */
@@ -1294,7 +1349,7 @@ public interface Query<T> {
    *
    * // Assuming sku is unique for products...
    *
-   * Map<?,Product> productMap =
+   * Map<String,Product> productMap =
    *     ebeanServer.find(Product.class)
    *     // use sku for keys...
    *     .setMapKey("sku")
@@ -1309,22 +1364,69 @@ public interface Query<T> {
   /**
    * Set this to false to not use the bean cache.
    * <p>
+   * This method is now superseded by {@link #setBeanCacheMode(CacheMode)}
+   * which provides more explicit options controlled bean cache use.
+   * </p>
+   * <p>
+   * This method is likely to be deprecated in the future with migration
+   * over to setUseBeanCache().
+   * </p>
+   */
+  default Query<T> setUseCache(boolean useCache) {
+    return setBeanCacheMode(useCache ? CacheMode.ON : CacheMode.OFF);
+  }
+
+  /**
+   * Set the mode to use the bean cache when executing this query.
+   * <p>
    * By default "find by id" and "find by natural key" will use the bean cache
    * when bean caching is enabled. Setting this to false means that the query
    * will not use the bean cache and instead hit the database.
    * </p>
    * <p>
-   * In the case of other queries (findList(), findEach() etc) then setting this to
-   * false beans that the if lazy loading is invoked that lazy loading will not try
-   * to use the bean cache.
+   * By default findList() with natural keys will not use the bean cache. In that
+   * case we need to explicitly use the bean cache.
    * </p>
    */
-  Query<T> setUseCache(boolean useCache);
+  Query<T> setBeanCacheMode(CacheMode beanCacheMode);
 
   /**
-   * Set this to true to use the query cache.
+   * Set the {@link CacheMode} to use the query for executing this query.
    */
-  Query<T> setUseQueryCache(boolean useQueryCache);
+  Query<T> setUseQueryCache(CacheMode queryCacheMode);
+
+  /**
+   * Calls {@link #setUseQueryCache(CacheMode)} with <code>ON</code> or <code>OFF</code>.
+   */
+  default Query<T> setUseQueryCache(boolean enabled) {
+    return setUseQueryCache(enabled ? CacheMode.ON : CacheMode.OFF);
+  }
+
+  /**
+   * Set an id to identify this query for profiling purposes.
+   * <p>
+   * The profileId is expected to be unique for a given bean type.
+   * </p>
+   * <p>
+   * Note that the profileId is treated as a short internally and has a MAX value of 32,767.
+   * </p>
+   */
+  Query<T> setProfileId(int profileId);
+
+  /**
+   * Set the profile location of this query. This is used to relate query execution metrics
+   * back to a location like a specific line of code.
+   */
+  Query<T> setProfileLocation(ProfileLocation profileLocation);
+
+  /**
+   * Set a label on the query.
+   * <p>
+   * This label can be used to help identify query performance metrics but we can also use
+   * profile location enhancement on Finders so for some that would be a better option.
+   * </p>
+   */
+  Query<T> setLabel(String label);
 
   /**
    * Set to true if this query should execute against the doc store.
@@ -1340,8 +1442,9 @@ public interface Query<T> {
   Query<T> setReadOnly(boolean readOnly);
 
   /**
-   * When set to true all the beans from this query are loaded into the bean
-   * cache.
+   * Will be deprecated - migrate to use setBeanCacheMode(CacheMode.RECACHE).
+   * <p>
+   * When set to true all the beans from this query are loaded into the bean cache.
    */
   Query<T> setLoadBeanCache(boolean loadBeanCache);
 
@@ -1386,9 +1489,12 @@ public interface Query<T> {
   String getGeneratedSql();
 
   /**
+   * Deprecated - migrate to forUpdate().
+   *
    * executed the select with "for update" which should lock the record
    * "on read"
    */
+  @Deprecated
   Query<T> setForUpdate(boolean forUpdate);
 
   /**
@@ -1432,6 +1538,11 @@ public interface Query<T> {
    */
   Class<T> getBeanType();
 
+  /**
+   * Return the type of query being executed.
+   */
+  QueryType getQueryType();
+
   /**
    * Set true if you want to disable lazy loading.
    * <p>
@@ -1449,4 +1560,12 @@ public interface Query<T> {
    */
   Set<String> validate();
 
+  /**
+   * Controls, if paginated queries should always append an 'order by id' statement at the end to
+   * guarantee a deterministic sort result. This may affect performance.
+   * If this is not enabled, and an orderBy is set on the query, it's up to the programmer that
+   * this query provides a deterministic result.
+   */
+  Query<T> orderById(boolean orderById);
+
 }

src/main/java/io/ebean/QueryType.java

@@ -0,0 +1,22 @@
+package io.ebean;
+
+/**
+ * The type of the query being executed.
+ */
+public enum QueryType {
+
+  /**
+   * A find query.
+   */
+  FIND,
+
+  /**
+   * An update query.
+   */
+  UPDATE,
+
+  /**
+   * A delete query.
+   */
+  DELETE
+}

src/main/java/io/ebean/RawSql.java

@@ -1,16 +1,5 @@
 package io.ebean;
 
-import io.ebean.util.CamelCaseHelper;
-
-import java.io.Serializable;
-import java.sql.ResultSet;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.LinkedHashMap;
-import java.util.List;
-import java.util.Map;
-
 /**
  * Used to build object graphs based on a raw SQL statement (rather than
  * generated by Ebean).
@@ -169,566 +158,6 @@ import java.util.Map;
  * Note that lazy loading also works with object graphs built with RawSql.
  * </p>
  */
-public final class RawSql implements Serializable {
+public interface RawSql {
 
-  private static final long serialVersionUID = 1L;
-
-  private final ResultSet resultSet;
-
-  private final Sql sql;
-
-  private final ColumnMapping columnMapping;
-
-  /**
-   * Construct with a ResultSet and properties that the columns map to.
-   * <p>
-   * The properties listed in the propertyNames must be in the same order as the columns in the
-   * resultSet.
-   * <p>
-   * When a query executes this RawSql object then it will close the resultSet.
-   */
-  public RawSql(ResultSet resultSet, String... propertyNames) {
-    this.resultSet = resultSet;
-    this.sql = null;
-    this.columnMapping = new ColumnMapping(propertyNames);
-  }
-
-  protected RawSql(ResultSet resultSet, Sql sql, ColumnMapping columnMapping) {
-    this.resultSet = resultSet;
-    this.sql = sql;
-    this.columnMapping = columnMapping;
-  }
-
-  /**
-   * Return the Sql either unparsed or in parsed (broken up) form.
-   */
-  public Sql getSql() {
-    return sql;
-  }
-
-  /**
-   * Return the key;
-   */
-  public Key getKey() {
-    boolean parsed = sql != null && sql.parsed;
-    String unParsedSql = (sql == null) ? "" : sql.unparsedSql;
-    return new Key(parsed, unParsedSql, columnMapping);
-  }
-
-  /**
-   * Return the resultSet if this is a ResultSet based RawSql.
-   */
-  public ResultSet getResultSet() {
-    return resultSet;
-  }
-
-  /**
-   * Return the column mapping for the SQL columns to bean properties.
-   */
-  public ColumnMapping getColumnMapping() {
-    return columnMapping;
-  }
-
-  /**
-   * Represents the sql part of the query. For parsed RawSql the sql is broken
-   * up so that Ebean can insert extra WHERE and HAVING expressions into the
-   * SQL.
-   */
-  public static final class Sql implements Serializable {
-
-    private static final long serialVersionUID = 1L;
-
-    private final boolean parsed;
-
-    private final String unparsedSql;
-
-    private final String preFrom;
-
-    private final String preWhere;
-
-    private final boolean andWhereExpr;
-
-    private final String preHaving;
-
-    private final boolean andHavingExpr;
-
-    private final String orderByPrefix;
-
-    private final String orderBy;
-
-    private final boolean distinct;
-
-    /**
-     * Construct for unparsed SQL.
-     */
-    protected Sql(String unparsedSql) {
-      this.parsed = false;
-      this.unparsedSql = unparsedSql;
-      this.preFrom = null;
-      this.preHaving = null;
-      this.preWhere = null;
-      this.andHavingExpr = false;
-      this.andWhereExpr = false;
-      this.orderByPrefix = null;
-      this.orderBy = null;
-      this.distinct = false;
-    }
-
-    /**
-     * Construct for parsed SQL.
-     */
-    protected Sql(String unparsedSql, String preFrom, String preWhere, boolean andWhereExpr,
-                  String preHaving, boolean andHavingExpr, String orderByPrefix, String orderBy, boolean distinct) {
-
-      this.unparsedSql = unparsedSql;
-      this.parsed = true;
-      this.preFrom = preFrom;
-      this.preHaving = preHaving;
-      this.preWhere = preWhere;
-      this.andHavingExpr = andHavingExpr;
-      this.andWhereExpr = andWhereExpr;
-      this.orderByPrefix = orderByPrefix;
-      this.orderBy = orderBy;
-      this.distinct = distinct;
-    }
-
-    @Override
-    public String toString() {
-      if (!parsed) {
-        return "unparsed[" + unparsedSql + "]";
-      }
-      return "select[" + preFrom + "] preWhere[" + preWhere + "] preHaving[" + preHaving + "] orderBy[" + orderBy + "]";
-    }
-
-    public boolean isDistinct() {
-      return distinct;
-    }
-
-    /**
-     * Return true if the SQL is left completely unmodified.
-     * <p>
-     * This means Ebean can't add WHERE or HAVING expressions into the query -
-     * it will be left completely unmodified.
-     * </p>
-     */
-    public boolean isParsed() {
-      return parsed;
-    }
-
-    /**
-     * Return the SQL when it is unparsed.
-     */
-    public String getUnparsedSql() {
-      return unparsedSql;
-    }
-
-    /**
-     * Return the SQL prior to FROM clause.
-     */
-    public String getPreFrom() {
-      return preFrom;
-    }
-
-    /**
-     * Return the SQL prior to WHERE clause.
-     */
-    public String getPreWhere() {
-      return preWhere;
-    }
-
-    /**
-     * Return true if there is already a WHERE clause and any extra where
-     * expressions start with AND.
-     */
-    public boolean isAndWhereExpr() {
-      return andWhereExpr;
-    }
-
-    /**
-     * Return the SQL prior to HAVING clause.
-     */
-    public String getPreHaving() {
-      return preHaving;
-    }
-
-    /**
-     * Return true if there is already a HAVING clause and any extra having
-     * expressions start with AND.
-     */
-    public boolean isAndHavingExpr() {
-      return andHavingExpr;
-    }
-
-    /**
-     * Return the 'order by' keywords.
-     * This can contain additional keywords, for example 'order siblings by' as Oracle syntax.
-     */
-    public String getOrderByPrefix() {
-      return (orderByPrefix == null) ? "order by" : orderByPrefix;
-    }
-
-    /**
-     * Return the SQL ORDER BY clause.
-     */
-    public String getOrderBy() {
-      return orderBy;
-    }
-
-  }
-
-  /**
-   * Defines the column mapping for raw sql DB columns to bean properties.
-   */
-  public static final class ColumnMapping implements Serializable {
-
-    private static final long serialVersionUID = 1L;
-
-    private final LinkedHashMap<String, Column> dbColumnMap;
-
-    private final Map<String, String> propertyMap;
-
-    private final Map<String, Column> propertyColumnMap;
-
-    private final boolean parsed;
-
-    private final boolean immutable;
-
-    /**
-     * Construct from parsed sql where the columns have been identified.
-     */
-    protected ColumnMapping(List<Column> columns) {
-      this.immutable = false;
-      this.parsed = true;
-      this.propertyMap = null;
-      this.propertyColumnMap = null;
-      this.dbColumnMap = new LinkedHashMap<>();
-      for (Column c : columns) {
-        dbColumnMap.put(c.getDbColumnKey(), c);
-      }
-    }
-
-    /**
-     * Construct for unparsed sql.
-     */
-    protected ColumnMapping() {
-      this.immutable = false;
-      this.parsed = false;
-      this.propertyMap = null;
-      this.propertyColumnMap = null;
-      this.dbColumnMap = new LinkedHashMap<>();
-    }
-
-    /**
-     * Construct for ResultSet use.
-     */
-    protected ColumnMapping(String... propertyNames) {
-      this.immutable = false;
-      this.parsed = false;
-      this.propertyMap = null;
-      this.dbColumnMap = new LinkedHashMap<>();
-
-      int pos = 0;
-      for (String prop : propertyNames) {
-        dbColumnMap.put(prop, new Column(pos++, prop, null, prop));
-      }
-      propertyColumnMap = dbColumnMap;
-    }
-
-    /**
-     * Construct an immutable ColumnMapping based on collected information.
-     */
-    protected ColumnMapping(boolean parsed, LinkedHashMap<String, Column> dbColumnMap) {
-      this.immutable = true;
-      this.parsed = parsed;
-      this.dbColumnMap = dbColumnMap;
-
-      HashMap<String, Column> pcMap = new HashMap<>();
-      HashMap<String, String> pMap = new HashMap<>();
-
-      for (Column c : dbColumnMap.values()) {
-        pMap.put(c.getPropertyName(), c.getDbColumn());
-        pcMap.put(c.getPropertyName(), c);
-      }
-      this.propertyMap = Collections.unmodifiableMap(pMap);
-      this.propertyColumnMap = Collections.unmodifiableMap(pcMap);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-      if (this == o) return true;
-      if (o == null || getClass() != o.getClass()) return false;
-      ColumnMapping that = (ColumnMapping) o;
-      return dbColumnMap.equals(that.dbColumnMap);
-    }
-
-    @Override
-    public int hashCode() {
-      return dbColumnMap.hashCode();
-    }
-
-    /**
-     * Return true if the property is mapped.
-     */
-    public boolean contains(String property) {
-      return this.propertyColumnMap.containsKey(property);
-    }
-
-    /**
-     * Creates an immutable copy of this ColumnMapping.
-     *
-     * @throws IllegalStateException when a propertyName has not been defined for a column.
-     */
-    protected ColumnMapping createImmutableCopy() {
-
-      for (Column c : dbColumnMap.values()) {
-        c.checkMapping();
-      }
-
-      return new ColumnMapping(parsed, dbColumnMap);
-    }
-
-    protected void columnMapping(String dbColumn, String propertyName) {
-
-      if (immutable) {
-        throw new IllegalStateException("Should never happen");
-      }
-      if (!parsed) {
-        int pos = dbColumnMap.size();
-        dbColumnMap.put(dbColumn, new Column(pos, dbColumn, null, propertyName));
-      } else {
-        Column column = dbColumnMap.get(dbColumn);
-        if (column == null) {
-          String msg = "DB Column [" + dbColumn + "] not found in mapping. Expecting one of [" + dbColumnMap.keySet() + "]";
-          throw new IllegalArgumentException(msg);
-        }
-        column.setPropertyName(propertyName);
-      }
-    }
-
-    /**
-     * Returns true if the Columns where supplied by parsing the sql select
-     * clause.
-     * <p>
-     * In the case where the columns where parsed then we can do extra checks on
-     * the column mapping such as, is the column a valid one in the sql and
-     * whether all the columns in the sql have been mapped.
-     * </p>
-     */
-    public boolean isParsed() {
-      return parsed;
-    }
-
-    /**
-     * Return the number of columns in this column mapping.
-     */
-    public int size() {
-      return dbColumnMap.size();
-    }
-
-    /**
-     * Return the column mapping.
-     */
-    protected Map<String, Column> mapping() {
-      return dbColumnMap;
-    }
-
-    /**
-     * Return the mapping by DB column.
-     */
-    public Map<String, String> getMapping() {
-      return propertyMap;
-    }
-
-    /**
-     * Return the index position by bean property name.
-     */
-    public int getIndexPosition(String property) {
-      Column c = propertyColumnMap.get(property);
-      return c == null ? -1 : c.getIndexPos();
-    }
-
-    /**
-     * Return an iterator of the Columns.
-     */
-    public Iterator<Column> getColumns() {
-      return dbColumnMap.values().iterator();
-    }
-
-    /**
-     * Modify any column mappings with the given table alias to have the path prefix.
-     * <p>
-     * For example modify all mappings with table alias "c" to have the path prefix "customer".
-     * </p>
-     * <p>
-     * For the "Root type" you don't need to specify a tableAliasMapping.
-     * </p>
-     */
-    public void tableAliasMapping(String tableAlias, String path) {
-
-      String startMatch = tableAlias + ".";
-      for (Map.Entry<String, Column> entry : dbColumnMap.entrySet()) {
-        if (entry.getKey().startsWith(startMatch)) {
-          entry.getValue().tableAliasMapping(path);
-        }
-      }
-    }
-
-    /**
-     * A Column of the RawSql that is mapped to a bean property (or ignored).
-     */
-    public static class Column implements Serializable {
-
-      private static final long serialVersionUID = 1L;
-      private final int indexPos;
-      private final String dbColumn;
-
-      private final String dbAlias;
-
-      private String propertyName;
-
-      /**
-       * Construct a Column.
-       */
-      public Column(int indexPos, String dbColumn, String dbAlias) {
-        this(indexPos, dbColumn, dbAlias, derivePropertyName(dbAlias, dbColumn));
-      }
-
-      private Column(int indexPos, String dbColumn, String dbAlias, String propertyName) {
-        this.indexPos = indexPos;
-        this.dbColumn = dbColumn;
-        this.dbAlias = dbAlias;
-        if (propertyName == null && dbAlias != null) {
-          this.propertyName = dbAlias;
-        } else {
-          this.propertyName = propertyName;
-        }
-      }
-
-      protected static String derivePropertyName(String dbAlias, String dbColumn) {
-        if (dbAlias != null) {
-          return CamelCaseHelper.toCamelFromUnderscore(dbAlias);
-        }
-        int dotPos = dbColumn.indexOf('.');
-        if (dotPos > -1) {
-          dbColumn = dbColumn.substring(dotPos + 1);
-        }
-        return CamelCaseHelper.toCamelFromUnderscore(dbColumn);
-      }
-
-      private void checkMapping() {
-        if (propertyName == null) {
-          String msg = "No propertyName defined (Column mapping) for dbColumn [" + dbColumn + "]";
-          throw new IllegalStateException(msg);
-        }
-      }
-
-      @Override
-      public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        Column that = (Column) o;
-        if (indexPos != that.indexPos) return false;
-        if (!dbColumn.equals(that.dbColumn)) return false;
-        if (dbAlias != null ? !dbAlias.equals(that.dbAlias) : that.dbAlias != null) return false;
-        return propertyName != null ? propertyName.equals(that.propertyName) : that.propertyName == null;
-      }
-
-      @Override
-      public int hashCode() {
-        int result = indexPos;
-        result = 92821 * result + dbColumn.hashCode();
-        result = 92821 * result + (dbAlias != null ? dbAlias.hashCode() : 0);
-        result = 92821 * result + (propertyName != null ? propertyName.hashCode() : 0);
-        return result;
-      }
-
-      @Override
-      public String toString() {
-        return dbColumn + "->" + propertyName;
-      }
-
-      /**
-       * Return the index position of this column.
-       */
-      public int getIndexPos() {
-        return indexPos;
-      }
-
-      /**
-       * Return the DB column alias if specified otherwise DB column.
-       * This is used as the key for mapping a column to a logical property.
-       */
-      public String getDbColumnKey() {
-        return (dbAlias != null) ? dbAlias : dbColumn;
-      }
-
-      /**
-       * Return the DB column name including table alias (if it has one).
-       */
-      public String getDbColumn() {
-        return dbColumn;
-      }
-
-      /**
-       * Return the bean property this column is mapped to.
-       */
-      public String getPropertyName() {
-        return propertyName;
-      }
-
-      /**
-       * Set the property name mapped to this db column.
-       */
-      private void setPropertyName(String propertyName) {
-        this.propertyName = propertyName;
-      }
-
-      /**
-       * Prepend the path to the property name.
-       * <p/>
-       * For example if path is "customer" then "name" becomes "customer.name".
-       */
-      public void tableAliasMapping(String path) {
-        if (path != null) {
-          propertyName = path + "." + propertyName;
-        }
-      }
-    }
-  }
-
-  /**
-   * A key for the RawSql object using for the query plan.
-   */
-  public static final class Key {
-
-    private final boolean parsed;
-    private final ColumnMapping columnMapping;
-    private final String unParsedSql;
-
-    Key(boolean parsed, String unParsedSql, ColumnMapping columnMapping) {
-      this.parsed = parsed;
-      this.unParsedSql = unParsedSql;
-      this.columnMapping = columnMapping;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-      if (this == o) return true;
-      if (o == null || getClass() != o.getClass()) return false;
-
-      Key that = (Key) o;
-      return parsed == that.parsed
-        && columnMapping.equals(that.columnMapping)
-        && unParsedSql.equals(that.unParsedSql);
-    }
-
-    @Override
-    public int hashCode() {
-      int result = (parsed ? 1 : 0);
-      result = 92821 * result + columnMapping.hashCode();
-      result = 92821 * result + unParsedSql.hashCode();
-      return result;
-    }
-  }
 }

src/main/java/io/ebean/RawSqlBuilder.java

@@ -1,9 +1,7 @@
 package io.ebean;
 
-import io.ebean.RawSql.ColumnMapping;
-import io.ebean.RawSql.Sql;
-
 import java.sql.ResultSet;
+import java.sql.SQLException;
 
 /**
  * Builds RawSql instances from a SQL string and column mappings.
@@ -14,18 +12,7 @@ import java.sql.ResultSet;
  *
  * @see RawSql
  */
-public class RawSqlBuilder {
-
-  /**
-   * Special property name assigned to a DB column that should be ignored.
-   */
-  public static final String IGNORE_COLUMN = "$$_IGNORE_COLUMN_$$";
-
-  private final ResultSet resultSet;
-
-  private final Sql sql;
-
-  private final ColumnMapping columnMapping;
+public interface RawSqlBuilder {
 
   /**
    * Create and return a RawSql object based on the resultSet and list of properties the columns in
@@ -34,8 +21,15 @@ public class RawSqlBuilder {
    * The properties listed in the propertyNames must be in the same order as the columns in the
    * resultSet.
    */
-  public static RawSql resultSet(ResultSet resultSet, String... propertyNames) {
-    return new RawSql(resultSet, propertyNames);
+  static RawSql resultSet(ResultSet resultSet, String... propertyNames) {
+    return XServiceProvider.rawSql().resultSet(resultSet, propertyNames);
+  }
+
+  /**
+   * Create and return a SqlRow based on the resultSet with dbTrueValue and binaryOptimizedUUID options.
+   */
+  static SqlRow sqlRow(ResultSet resultSet, final String dbTrueValue, boolean binaryOptimizedUUID) throws SQLException {
+    return XServiceProvider.rawSql().sqlRow(resultSet, dbTrueValue, binaryOptimizedUUID);
   }
 
   /**
@@ -43,10 +37,8 @@ public class RawSqlBuilder {
    * modified - so no additional WHERE or HAVING expressions can be added to
    * this query.
    */
-  public static RawSqlBuilder unparsed(String sql) {
-
-    Sql s = new Sql(sql);
-    return new RawSqlBuilder(s, new ColumnMapping());
+  static RawSqlBuilder unparsed(String sql) {
+    return XServiceProvider.rawSql().unparsed(sql);
   }
 
   /**
@@ -62,19 +54,8 @@ public class RawSqlBuilder {
    * correct column names are entered into the mapping.
    * </p>
    */
-  public static RawSqlBuilder parse(String sql) {
-
-    Sql sql2 = DRawSqlParser.parse(sql);
-    String select = sql2.getPreFrom();
-
-    ColumnMapping mapping = DRawSqlColumnsParser.parse(select);
-    return new RawSqlBuilder(sql2, mapping);
-  }
-
-  private RawSqlBuilder(Sql sql, ColumnMapping columnMapping) {
-    this.sql = sql;
-    this.columnMapping = columnMapping;
-    this.resultSet = null;
+  static RawSqlBuilder parse(String sql) {
+    return XServiceProvider.rawSql().parsed(sql);
   }
 
   /**
@@ -87,17 +68,12 @@ public class RawSqlBuilder {
    * @param dbColumn     the DB column that we are mapping to a bean property
    * @param propertyName the bean property that we are mapping the DB column to.
    */
-  public RawSqlBuilder columnMapping(String dbColumn, String propertyName) {
-    columnMapping.columnMapping(dbColumn, propertyName);
-    return this;
-  }
+  RawSqlBuilder columnMapping(String dbColumn, String propertyName);
 
   /**
    * Ignore this DB column. It is not mapped to any bean property.
    */
-  public RawSqlBuilder columnMappingIgnore(String dbColumn) {
-    return columnMapping(dbColumn, IGNORE_COLUMN);
-  }
+  RawSqlBuilder columnMappingIgnore(String dbColumn);
 
   /**
    * Modify any column mappings with the given table alias to have the path prefix.
@@ -108,24 +84,12 @@ public class RawSqlBuilder {
    * For the "Root type" you don't need to specify a tableAliasMapping.
    * </p>
    */
-  public RawSqlBuilder tableAliasMapping(String tableAlias, String path) {
-    columnMapping.tableAliasMapping(tableAlias, path);
-    return this;
-  }
+  RawSqlBuilder tableAliasMapping(String tableAlias, String path);
 
   /**
    * Create the immutable RawSql object. Do this after all the column mapping
    * has been defined.
    */
-  public RawSql create() {
-    return new RawSql(resultSet, sql, columnMapping.createImmutableCopy());
-  }
-
-  /**
-   * Return the internal parsed Sql object (for testing).
-   */
-  protected Sql getSql() {
-    return sql;
-  }
+  RawSql create();
 
 }

src/main/java/io/ebean/SqlQuery.java

@@ -1,5 +1,7 @@
 package io.ebean;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import java.io.Serializable;
 import java.util.List;
 import java.util.Optional;
@@ -43,6 +45,7 @@ public interface SqlQuery extends Serializable {
   /**
    * Execute the query returning a list.
    */
+  @Nonnull
   List<SqlRow> findList();
 
   /**
@@ -71,18 +74,15 @@ public interface SqlQuery extends Serializable {
    * PersistenceException.
    * </p>
    */
+  @Nullable
   SqlRow findOne();
 
   /**
    * Execute the query returning an optional row.
    */
+  @Nonnull
   Optional<SqlRow> findOneOrEmpty();
 
-  /**
-   * Synonym for findOne().
-   */
-  SqlRow findUnique();
-
   /**
    * The same as bind for named parameters.
    */
@@ -115,6 +115,11 @@ public interface SqlQuery extends Serializable {
    */
   SqlQuery setTimeout(int secs);
 
+  /**
+   * Set a label that can be put on performance metrics that are collected.
+   */
+  SqlQuery setLabel(String label);
+
   /**
    * A hint which for JDBC translates to the Statement.fetchSize().
    * <p>

src/main/java/io/ebean/SqlUpdate.java

@@ -54,6 +54,25 @@ public interface SqlUpdate {
    */
   int execute();
 
+  /**
+   * Return the generated key value.
+   */
+  Object getGeneratedKey();
+
+  /**
+   * Execute and return the generated key. This is effectively a short cut for:
+   *
+   * <pre>{@code
+   *
+   *   sqlUpdate.execute();
+   *   Object key = sqlUpdate.getGeneratedKey();
+   *
+   * }</pre>
+   *
+   * @return The generated key value
+   */
+  Object executeGetKey();
+
   /**
    * Return true if eBean should automatically deduce the table modification
    * information and process it.
@@ -88,6 +107,11 @@ public interface SqlUpdate {
    */
   SqlUpdate setLabel(String label);
 
+  /**
+   * Set to true when we want to use getGeneratedKeys with this statement.
+   */
+  SqlUpdate setGetGeneratedKeys(boolean getGeneratedKeys);
+
   /**
    * Return the sql statement.
    */

src/main/java/io/ebean/Transaction.java

@@ -1,6 +1,7 @@
 package io.ebean;
 
 import io.ebean.annotation.DocStoreMode;
+import io.ebean.annotation.PersistBatch;
 import io.ebean.config.DocStoreConfig;
 import io.ebean.config.ServerConfig;
 
@@ -12,6 +13,23 @@ import java.sql.Connection;
  */
 public interface Transaction extends AutoCloseable {
 
+  /**
+   * Return the current transaction (of the default server) or null if there is
+   * no current transaction in scope.
+   * <p>
+   * This is the same as <code>Ebean.currentTransaction()</code>
+   * </p>
+   * <p>
+   * This returns the current transaction for the 'default server'.  If you are using
+   * multiple EbeanServer's then use {@link EbeanServer#currentTransaction()}.
+   * </p>
+   * @see Ebean#currentTransaction()
+   * @see EbeanServer#currentTransaction()
+   */
+  static Transaction current() {
+    return Ebean.currentTransaction();
+  }
+
   /**
    * Read Committed transaction isolation. Same as
    * java.sql.Connection.TRANSACTION_READ_COMMITTED.
@@ -41,6 +59,14 @@ public interface Transaction extends AutoCloseable {
    */
   void register(TransactionCallback callback);
 
+  /**
+   * Set a label on the transaction.
+   * <p>
+   * This label is used to group transaction execution times for performance metrics reporting.
+   * </p>
+   */
+  void setLabel(String label);
+
   /**
    * Return true if this transaction is read only.
    */

src/main/java/io/ebean/TxCallable.java

@@ -1,47 +0,0 @@
-package io.ebean;
-
-/**
- * Execute a TxCallable in a Transaction scope.
- * <p>
- * Use this with the {@link Ebean#execute(TxCallable)} method.
- * </p>
- * <p>
- * Note that this is basically the same as TxRunnable except that it returns an
- * Object (and you specify the return type via generics).
- * </p>
- * <p>
- * See also {@link TxRunnable}.
- * </p>
- * <p>
- * <pre>{@code
- *
- * Ebean.execute(new TxCallable<String>() {
- *   public String call() {
- *     User u1 = Ebean.find(User.class, 1);
- *     User u2 = Ebean.find(User.class, 2);
- *
- *     u1.setName("u1 mod");
- *     u2.setName("u2 mod");
- *
- *     Ebean.save(u1);
- *     Ebean.save(u2);
- *
- *     return u1.getEmail();
- *   }
- * });
- *
- * }</pre>
- *
- * @see TxRunnable
- */
-public interface TxCallable<T> {
-
-  /**
-   * Execute the method within a transaction scope returning the result.
-   * <p>
-   * If you do not want to return a result you should look to use TxRunnable
-   * instead.
-   * </p>
-   */
-  T call();
-}

src/main/java/io/ebean/TxRunnable.java

@@ -1,40 +0,0 @@
-package io.ebean;
-
-/**
- * Execute a TxRunnable in a Transaction scope.
- * <p>
- * Use this with the {@link Ebean#execute(TxRunnable)} method.
- * </p>
- * <p>
- * See also {@link TxCallable}.
- * </p>
- * <p>
- * <pre>{@code
- *
- * // this run method runs in a transaction scope
- * // which by default is TxScope.REQUIRED
- *
- * Ebean.execute(new TxRunnable() {
- *   public void run() {
- *     User u1 = Ebean.find(User.class, 1);
- *     User u2 = Ebean.find(User.class, 2);
- *
- *     u1.setName("u1 mod");
- *     u2.setName("u2 mod");
- *
- *     Ebean.save(u1);
- *     Ebean.save(u2);
- *   }
- * });
- *
- * }</pre>
- *
- * @see TxCallable
- */
-public interface TxRunnable {
-
-  /**
-   * Run the method in a transaction sope.
-   */
-  void run();
-}

src/main/java/io/ebean/TxScope.java

@@ -1,46 +1,62 @@
 package io.ebean;
 
+import io.ebean.annotation.PersistBatch;
+import io.ebean.annotation.TxIsolation;
+import io.ebean.annotation.TxType;
+
 import java.util.ArrayList;
+import java.util.concurrent.Callable;
 
 /**
  * Holds the definition of how a transactional method should run.
  * <p>
  * This information matches the features of the Transactional annotation. You
- * can use it directly with TxRunnable or TxCallable via
- * {@link Ebean#execute(TxScope, TxCallable)} or
- * {@link Ebean#execute(TxScope, TxRunnable)}.
+ * can use it directly with Runnable or Callable via
+ * {@link Ebean#execute(TxScope, Runnable)} or
+ * {@link Ebean#executeCall(TxScope, Callable)}.
  * </p>
  * <p>
  * This object is used internally with the enhancement of a method with
  * Transactional annotation.
  * </p>
  *
- * @see TxCallable
- * @see TxRunnable
- * @see Ebean#execute(TxScope, TxCallable)
- * @see Ebean#execute(TxScope, TxRunnable)
+ * @see Ebean#execute(TxScope, Runnable)
+ * @see Ebean#executeCall(TxScope, Callable)
  */
 public final class TxScope {
 
-  TxType type;
+  private int profileId;
 
-  String serverName;
+  private TxType type;
 
-  TxIsolation isolation;
+  private String serverName;
 
-  PersistBatch batch;
+  private TxIsolation isolation;
 
-  PersistBatch batchOnCascade;
+  private PersistBatch batch;
 
-  int batchSize;
+  private PersistBatch batchOnCascade;
 
-  boolean skipGeneratedKeys;
+  private int batchSize;
 
-  boolean readOnly;
+  private boolean skipGeneratedKeys;
 
-  ArrayList<Class<? extends Throwable>> rollbackFor;
+  private boolean readOnly;
 
-  ArrayList<Class<? extends Throwable>> noRollbackFor;
+  /**
+   * Set this to false if the JDBC batch should not be automatically be flushed when a query is executed.
+   */
+  private boolean flushOnQuery = true;
+
+  private boolean skipCache;
+
+  private String label;
+
+  private ArrayList<Class<? extends Throwable>> rollbackFor;
+
+  private ArrayList<Class<? extends Throwable>> noRollbackFor;
+
+  private ProfileLocation profileLocation;
 
   /**
    * Helper method to create a TxScope with REQUIRES.
@@ -160,6 +176,66 @@ public final class TxScope {
     return this;
   }
 
+  /**
+   * Return the transaction profile id.
+   */
+  public int getProfileId() {
+    return profileId;
+  }
+
+  /**
+   * Set the transaction profile id.
+   */
+  public TxScope setProfileId(int profileId) {
+    this.profileId = profileId;
+    return this;
+  }
+
+  /**
+   * Return the profile location.
+   */
+  public ProfileLocation getProfileLocation() {
+    return profileLocation;
+  }
+
+  /**
+   * Set the profile location.
+   */
+  public TxScope setProfileLocation(ProfileLocation profileLocation) {
+    this.profileLocation = profileLocation;
+    return this;
+  }
+
+  /**
+   * Return true if the L2 cache should be skipped for this transaction.
+   */
+  public boolean isSkipCache() {
+    return skipCache;
+  }
+
+  /**
+   * Set to true if the transaction should skip L2 cache access.
+   */
+  public TxScope setSkipCache(boolean skipCache) {
+    this.skipCache = skipCache;
+    return this;
+  }
+
+  /**
+   * Return the label for the transaction.
+   */
+  public String getLabel() {
+    return label;
+  }
+
+  /**
+   * Set a label for the transaction.
+   */
+  public TxScope setLabel(String label) {
+    this.label = label;
+    return this;
+  }
+
   /**
    * Return the batch mode.
    */
@@ -235,6 +311,28 @@ public final class TxScope {
     return this;
   }
 
+  /**
+   * Return false if the JDBC batch buffer should not be flushed automatically when a query is executed.
+   */
+  public boolean isFlushOnQuery() {
+    return flushOnQuery;
+  }
+
+  /**
+   * Set flushOnQuery to be false to stop automatically flushing the JDBC batch buffer when a query is executed.
+   */
+  public TxScope setFlushOnQuery(boolean flushOnQuery) {
+    this.flushOnQuery = flushOnQuery;
+    return this;
+  }
+
+  /**
+   * Return the isolation level.
+   */
+  public int getIsolationLevel() {
+    return isolation != null ? isolation.getLevel() : -1;
+  }
+
   /**
    * Return the Isolation level this transaction should run with.
    */

src/main/java/io/ebean/Update.java

@@ -152,6 +152,11 @@ public interface Update<T> {
    */
   Update<T> setNullParameter(String name, int jdbcType);
 
+  /**
+   * Set a label meaning performance metrics will be collected for the execution of this update.
+   */
+  Update<T> setLabel(String label);
+
   /**
    * Return the sql that is actually executed.
    */

src/main/java/io/ebean/UpdateQuery.java

@@ -148,6 +148,12 @@ public interface UpdateQuery<T> {
    */
   UpdateQuery<T> setRaw(String propertyExpression, Object... values);
 
+  /**
+   * Set the profile location of this update query. This is used to relate query execution metrics
+   * back to a location like a specific line of code.
+   */
+  UpdateQuery<T> setProfileLocation(ProfileLocation profileLocation);
+
   /**
    * Return the query expression list to add predicates to.
    */

src/main/java/io/ebean/XServiceProvider.java

@@ -0,0 +1,50 @@
+package io.ebean;
+
+import io.ebean.service.SpiProfileLocationFactory;
+import io.ebean.service.SpiRawSqlService;
+
+import java.util.Iterator;
+import java.util.ServiceLoader;
+
+/**
+ * Lookup internal services.
+ */
+class XServiceProvider {
+
+  private static SpiRawSqlService rawSqlService = initRawSql();
+
+  private static SpiProfileLocationFactory profileLocationFactory = initProfileLocation();
+
+  private static SpiRawSqlService initRawSql() {
+
+    Iterator<SpiRawSqlService> loader = ServiceLoader.load(SpiRawSqlService.class).iterator();
+    if (loader.hasNext()) {
+      return loader.next();
+    }
+    throw new IllegalStateException("No service implementation found for SpiRawSqlService?");
+  }
+
+  private static SpiProfileLocationFactory initProfileLocation() {
+
+    Iterator<SpiProfileLocationFactory> loader = ServiceLoader.load(SpiProfileLocationFactory.class).iterator();
+    if (loader.hasNext()) {
+      return loader.next();
+    }
+    throw new IllegalStateException("No service implementation found for SpiProfileLocationFactory?");
+  }
+
+  /**
+   * Return the RawSqlService implementation.
+   */
+  static SpiRawSqlService rawSql() {
+    return rawSqlService;
+  }
+
+  /**
+   * Return the RawSqlService implementation.
+   */
+  static SpiProfileLocationFactory profileLocationFactory() {
+    return profileLocationFactory;
+  }
+
+}

src/main/java/io/ebean/bean/BeanCollection.java

@@ -191,6 +191,11 @@ public interface BeanCollection<E> extends Serializable {
    */
   void setModifyListening(ModifyListenMode modifyListenMode);
 
+  /**
+   * Return the current modify listening mode. Can be null for on newly created beans.
+   */
+  ModifyListenMode getModifyListening();
+
   /**
    * Add an object to the additions list.
    * <p>
@@ -226,4 +231,14 @@ public interface BeanCollection<E> extends Serializable {
    * additions and removals have been processed.
    */
   void modifyReset();
+
+  /**
+   * Has been modified by an addition or removal.
+   */
+  boolean wasTouched();
+
+  /**
+   * Return a shallow copy of this collection that is modifiable.
+   */
+  BeanCollection<E> getShallowCopy();
 }

src/main/java/io/ebean/bean/BeanDiffVisitor.java

@@ -0,0 +1,22 @@
+package io.ebean.bean;
+
+/**
+ * Visitor for collecting new/old values for a bean update.
+ */
+public interface BeanDiffVisitor {
+
+  /**
+   * Collect a new/old value pair.
+   */
+  void visit(int position, Object newVal, Object oldVal);
+
+  /**
+   * Start processing an associated bean.
+   */
+  void visitPush(int position);
+
+  /**
+   * Stop processing an associated bean.
+   */
+  void visitPop();
+}

src/main/java/io/ebean/bean/CallStack.java

@@ -26,14 +26,16 @@ public final class CallStack implements Serializable {
 
   private final StackTraceElement[] callStack;
 
+  private final int hc;
+
   public CallStack(StackTraceElement[] callStack, int zeroHash, int pathHash) {
     this.callStack = callStack;
     this.zeroHash = enc(zeroHash);
     this.pathHash = enc(pathHash);
+    this.hc = computeHashCode();
   }
 
-  @Override
-  public int hashCode() {
+  private int computeHashCode() {
     int hc = 0;
     for (StackTraceElement aCallStack : callStack) {
       hc = 92821 * hc + aCallStack.hashCode();
@@ -41,6 +43,11 @@ public final class CallStack implements Serializable {
     return hc;
   }
 
+  @Override
+  public int hashCode() {
+    return hc;
+  }
+
   @Override
   public boolean equals(Object obj) {
     if (obj == this) {

src/main/java/io/ebean/bean/EntityBean.java

@@ -1,6 +1,5 @@
 package io.ebean.bean;
 
-import java.beans.PropertyChangeListener;
 import java.io.Serializable;
 
 /**
@@ -14,8 +13,14 @@ import java.io.Serializable;
  */
 public interface EntityBean extends Serializable {
 
+  /**
+   * Return all the property names in defined order.
+   */
   String[] _ebean_getPropertyNames();
 
+  /**
+   * Return the property name at the given position.
+   */
   String _ebean_getPropertyName(int pos);
 
   /**
@@ -32,16 +37,6 @@ public interface EntityBean extends Serializable {
    */
   Object _ebean_newInstance();
 
-  /**
-   * Add a PropertyChangeListener to this bean.
-   */
-  void addPropertyChangeListener(PropertyChangeListener listener);
-
-  /**
-   * Remove a PropertyChangeListener from this bean.
-   */
-  void removePropertyChangeListener(PropertyChangeListener listener);
-
   /**
    * Generated method that sets the loaded state on all the embedded beans on
    * this entity bean by using EntityBeanIntercept.setEmbeddedLoaded(Object o);

src/main/java/io/ebean/bean/EntityBeanIntercept.java

@@ -3,15 +3,12 @@ package io.ebean.bean;
 import io.ebean.Ebean;
 import io.ebean.ValuePair;
 
-import java.util.Arrays;
 import javax.persistence.EntityNotFoundException;
 import javax.persistence.PersistenceException;
-import java.beans.PropertyChangeEvent;
-import java.beans.PropertyChangeListener;
-import java.beans.PropertyChangeSupport;
 import java.io.Serializable;
 import java.math.BigDecimal;
 import java.net.URL;
+import java.util.Arrays;
 import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
 import java.util.Map;
@@ -34,8 +31,6 @@ public final class EntityBeanIntercept implements Serializable {
 
   private transient NodeUsageCollector nodeUsageCollector;
 
-  private transient PropertyChangeSupport pcs;
-
   private transient PersistenceContext persistenceContext;
 
   private transient BeanLoader beanLoader;
@@ -57,6 +52,8 @@ public final class EntityBeanIntercept implements Serializable {
    */
   private int state;
 
+  private boolean forceUpdate;
+
   private boolean readOnly;
 
   private boolean dirty;
@@ -95,6 +92,7 @@ public final class EntityBeanIntercept implements Serializable {
   private int lazyLoadProperty = -1;
 
   private Object ownerId;
+  private int sortOrder;
 
   /**
    * Create a intercept with a given entity.
@@ -128,46 +126,6 @@ public final class EntityBeanIntercept implements Serializable {
     this.persistenceContext = persistenceContext;
   }
 
-  /**
-   * Add a property change listener for this entity bean.
-   */
-  public void addPropertyChangeListener(PropertyChangeListener listener) {
-    if (pcs == null) {
-      pcs = new PropertyChangeSupport(owner);
-    }
-    pcs.addPropertyChangeListener(listener);
-  }
-
-  /**
-   * Add a property change listener for this entity bean for a specific
-   * property.
-   */
-  public void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) {
-    if (pcs == null) {
-      pcs = new PropertyChangeSupport(owner);
-    }
-    pcs.addPropertyChangeListener(propertyName, listener);
-  }
-
-  /**
-   * Remove a property change listener for this entity bean.
-   */
-  public void removePropertyChangeListener(PropertyChangeListener listener) {
-    if (pcs != null) {
-      pcs.removePropertyChangeListener(listener);
-    }
-  }
-
-  /**
-   * Remove a property change listener for this entity bean for a specific
-   * property.
-   */
-  public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) {
-    if (pcs != null) {
-      pcs.removePropertyChangeListener(propertyName, listener);
-    }
-  }
-
   /**
    * Turn on profile collection.
    */
@@ -336,6 +294,20 @@ public final class EntityBeanIntercept implements Serializable {
     this.readOnly = readOnly;
   }
 
+  /**
+   * Set the bean to be updated when persisted (for merge).
+   */
+  public void setForceUpdate(boolean forceUpdate) {
+    this.forceUpdate = forceUpdate;
+  }
+
+  /**
+   * Return true if the entity should be updated.
+   */
+  public boolean isUpdate() {
+    return forceUpdate || state == STATE_LOADED;
+  }
+
   /**
    * Return true if the entity has been loaded.
    */
@@ -507,6 +479,15 @@ public final class EntityBeanIntercept implements Serializable {
     loadedProps[propertyIndex] = true;
   }
 
+  /**
+   * Set all properties to be loaded (post insert).
+   */
+  public void setLoadedPropertyAll() {
+    for (int i = 0; i < loadedProps.length; i++) {
+      loadedProps[i] = true;
+    }
+  }
+
   /**
    * Return true if the property is loaded.
    */
@@ -564,6 +545,16 @@ public final class EntityBeanIntercept implements Serializable {
     }
   }
 
+  /**
+   * Set old value but force it to be set regardless if it already has a value.
+   */
+  private void setOriginalValueForce(int propertyIndex, Object value) {
+    if (origValues == null) {
+      origValues = new Object[owner._ebean_getPropertyNames().length];
+    }
+    origValues[propertyIndex] = value;
+  }
+
   /**
    * For forced update on a 'New' bean set all the loaded properties to changed.
    */
@@ -694,6 +685,28 @@ public final class EntityBeanIntercept implements Serializable {
     }
   }
 
+  /**
+   * Recursively add dirty properties.
+   */
+  public void addDirtyPropertyValues(BeanDiffVisitor visitor) {
+    int len = getPropertyLength();
+    for (int i = 0; i < len; i++) {
+      if (changedProps != null && changedProps[i]) {
+        // the property has been changed on this bean
+        Object newVal = owner._ebean_getField(i);
+        Object oldVal = getOrigValue(i);
+        visitor.visit(i, newVal, oldVal);
+
+      } else if (embeddedDirty != null && embeddedDirty[i]) {
+        // an embedded property has been changed - recurse
+        EntityBean embeddedBean = (EntityBean) owner._ebean_getField(i);
+        visitor.visitPush(i);
+        embeddedBean._ebean_getIntercept().addDirtyPropertyValues(visitor);
+        visitor.visitPop();
+      }
+    }
+  }
+
   /**
    * Return a dirty property hash taking into account embedded beans.
    */
@@ -707,6 +720,9 @@ public final class EntityBeanIntercept implements Serializable {
    * Add and return a dirty property hash recursing into embedded beans.
    */
   private void addDirtyPropertyKey(StringBuilder sb) {
+    if (sortOrder > 0) {
+      sb.append("s,");
+    }
     int len = getPropertyLength();
     for (int i = 0; i < len; i++) {
       if (changedProps != null && changedProps[i]) {
@@ -860,9 +876,9 @@ public final class EntityBeanIntercept implements Serializable {
     loadedProps[propertyIndex] = true;
   }
 
-  private void preGetterCallback() {
+  private void preGetterCallback(int propertyIndex) {
     if (preGetterCallback != null) {
-      preGetterCallback.preGetterTrigger();
+      preGetterCallback.preGetterTrigger(propertyIndex);
     }
   }
 
@@ -870,14 +886,14 @@ public final class EntityBeanIntercept implements Serializable {
    * Called prior to Id property getter.
    */
   public void preGetId() {
-    preGetterCallback();
+    preGetterCallback(-1);
   }
 
   /**
    * Method that is called prior to a getter method on the actual entity.
    */
   public void preGetter(int propertyIndex) {
-    preGetterCallback();
+    preGetterCallback(propertyIndex);
     if (state == STATE_NEW || disableLazyLoad) {
       return;
     }
@@ -889,49 +905,17 @@ public final class EntityBeanIntercept implements Serializable {
     }
   }
 
-  /**
-   * Called for "enhancement" postSetter processing. This is around a PUTFIELD
-   * so no need to check the newValue afterwards.
-   */
-  public void postSetter(PropertyChangeEvent event) {
-    if (pcs != null && event != null) {
-      pcs.firePropertyChange(event);
-    }
-  }
-
-  /**
-   * Called for "subclassed" postSetter processing. Here the newValue has to be
-   * re-fetched (and passed into this method) in case there is code inside the
-   * setter that further mutates the value.
-   */
-  public void postSetter(PropertyChangeEvent event, Object newValue) {
-    if (pcs != null && event != null) {
-      if (newValue != null && newValue.equals(event.getNewValue())) {
-        pcs.firePropertyChange(event);
-      } else {
-        pcs.firePropertyChange(event.getPropertyName(), event.getOldValue(), newValue);
-      }
-    }
-  }
-
   /**
    * OneToMany and ManyToMany don't have any interception so just check for
    * PropertyChangeSupport.
    */
-  public PropertyChangeEvent preSetterMany(boolean interceptField, int propertyIndex, Object oldValue, Object newValue) {
+  public void preSetterMany(boolean interceptField, int propertyIndex, Object oldValue, Object newValue) {
 
     if (readOnly) {
       throw new IllegalStateException("This bean is readOnly");
     }
 
     setLoadedProperty(propertyIndex);
-
-    // Bean itself not considered dirty when many changed
-    if (pcs != null) {
-      return new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
-    } else {
-      return null;
-    }
   }
 
   private void setChangedPropertyValue(int propertyIndex, boolean setDirtyState, Object origValue) {
@@ -943,15 +927,19 @@ public final class EntityBeanIntercept implements Serializable {
 
     if (setDirtyState) {
       setOriginalValue(propertyIndex, origValue);
-      if (!dirty) {
-        dirty = true;
-        if (embeddedOwner != null) {
-          // Cascade dirty state from Embedded bean to parent bean
-          embeddedOwner._ebean_getIntercept().setEmbeddedDirty(embeddedOwnerIndex);
-        }
-        if (nodeUsageCollector != null) {
-          nodeUsageCollector.setModified();
-        }
+      setDirtyStatus();
+    }
+  }
+
+  private void setDirtyStatus() {
+    if (!dirty) {
+      dirty = true;
+      if (embeddedOwner != null) {
+        // Cascade dirty state from Embedded bean to parent bean
+        embeddedOwner._ebean_getIntercept().setEmbeddedDirty(embeddedOwnerIndex);
+      }
+      if (nodeUsageCollector != null) {
+        nodeUsageCollector.setModified();
       }
     }
   }
@@ -960,168 +948,156 @@ public final class EntityBeanIntercept implements Serializable {
    * Check to see if the values are not equal. If they are not equal then create
    * the old values for use with ConcurrencyMode.ALL.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, Object oldValue, Object newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, Object oldValue, Object newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (!areEqual(oldValue, newValue)) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
 
   /**
    * Check for primitive boolean.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, boolean oldValue, boolean newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, boolean oldValue, boolean newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (oldValue != newValue) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * Check for primitive int.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, int oldValue, int newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, int oldValue, int newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (oldValue != newValue) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * long.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, long oldValue, long newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, long oldValue, long newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (oldValue != newValue) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * double.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, double oldValue, double newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, double oldValue, double newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
-    } else if (oldValue != newValue) {
+    } else if (Double.compare(oldValue, newValue) != 0) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * float.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, float oldValue, float newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, float oldValue, float newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
-    } else if (oldValue != newValue) {
+    } else if (Float.compare(oldValue, newValue) != 0) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * short.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, short oldValue, short newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, short oldValue, short newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (oldValue != newValue) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * char.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, char oldValue, char newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, char oldValue, char newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (oldValue != newValue) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * byte.
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, byte oldValue, byte newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, byte oldValue, byte newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (oldValue != newValue) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * char[].
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, char[] oldValue, char[] newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, char[] oldValue, char[] newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (!Arrays.equals(oldValue, newValue)) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
    * byte[].
    */
-  public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, byte[] oldValue, byte[] newValue) {
+  public void preSetter(boolean intercept, int propertyIndex, byte[] oldValue, byte[] newValue) {
 
     if (state == STATE_NEW) {
       setLoadedProperty(propertyIndex);
     } else if (!Arrays.equals(oldValue, newValue)) {
       setChangedPropertyValue(propertyIndex, intercept, oldValue);
-    } else {
-      return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
+  }
+
+  /**
+   * Explicitly set an old value with force (the old value is forced even it is already set).
+   */
+  public void setOldValue(int propertyIndex, Object oldValue) {
+    setChangedProperty(propertyIndex);
+    setOriginalValueForce(propertyIndex, oldValue);
+    setDirtyStatus();
+  }
+
+  /**
+   * Return the sort order value for an order column.
+   */
+  public int getSortOrder() {
+    return sortOrder;
+  }
+
+  /**
+   * Set the sort order value for an order column.
+   */
+  public void setSortOrder(int sortOrder) {
+    this.sortOrder = sortOrder;
   }
 }

src/main/java/io/ebean/bean/PreGetterCallback.java

@@ -7,7 +7,9 @@ package io.ebean.bean;
 public interface PreGetterCallback {
 
   /**
-   * Trigger the callback.
+   * Trigger the callback based on a getter on a property.
+   *
+   * @param propertyIndex The index of the property
    */
-  void preGetterTrigger();
+  void preGetterTrigger(int propertyIndex);
 }

src/main/java/io/ebean/cache/ServerCache.java

@@ -1,5 +1,9 @@
 package io.ebean.cache;
 
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
 /**
  * Represents part of the "L2" server side cache.
  * <p>
@@ -13,20 +17,46 @@ package io.ebean.cache;
  */
 public interface ServerCache {
 
+  default Map<Object, Object> getAll(Set<Object> keys) {
+
+    Map<Object, Object> map = new LinkedHashMap<>();
+    for (Object key : keys) {
+      Object value = get(key);
+      if (value != null) {
+        map.put(key, value);
+      }
+    }
+    return map;
+  }
+
   /**
    * Return the value given the key.
    */
   Object get(Object id);
 
+  /**
+   * Put all the values in the cache.
+   */
+  default void putAll(Map<Object, Object> keyValues) {
+    keyValues.forEach(this::put);
+  }
+
   /**
    * Put the value in the cache with a given id.
    */
-  Object put(Object id, Object value);
+  void put(Object id, Object value);
+
+  /**
+   * Remove the entries from the cache given the id values.
+   */
+  default void removeAll(Set<Object> keys) {
+    keys.forEach(this::remove);
+  }
 
   /**
    * Remove a entry from the cache given its id.
    */
-  Object remove(Object id);
+  void remove(Object id);
 
   /**
    * Clear all entries from the cache.

src/main/java/io/ebean/cache/ServerCacheManager.java

@@ -44,4 +44,19 @@ public interface ServerCacheManager {
    */
   void clearAll();
 
+  /**
+   * Clear all the local caches.
+   *
+   * This is used when the L2 Cache is based on clustered near-caches (Like Ebean-K8s-L2Cache).
+   * It is not used when the L2 cache is a distributed cache such as HazelCast or Ignite etc.
+   */
+  void clearAllLocal();
+
+  /**
+   * Clear the local caches for this bean type.
+   *
+   * This is used when the L2 Cache is based on clustered near-caches (Like Ebean-K8s-L2Cache).
+   * It is not used when the L2 cache is a distributed cache such as HazelCast or Ignite etc.
+   */
+  void clearLocal(Class<?> beanType);
 }

src/main/java/io/ebean/common/AbstractBeanCollection.java

@@ -140,6 +140,11 @@ abstract class AbstractBeanCollection<E> implements BeanCollection<E> {
   // Support for modify additions deletions etc - ManyToMany
   // ---------------------------------------------------------
 
+  @Override
+  public ModifyListenMode getModifyListening() {
+    return modifyListenMode;
+  }
+
   /**
    * set modifyListening to be on or off.
    */
@@ -213,4 +218,21 @@ abstract class AbstractBeanCollection<E> implements BeanCollection<E> {
   boolean holdsModifications() {
     return modifyHolder != null && modifyHolder.hasModifications();
   }
+
+  @Override
+  public boolean wasTouched() {
+    return modifyHolder != null && modifyHolder.wasTouched();
+  }
+
+  /**
+   * Copies all relevant properties for a clone. See {@link #getShallowCopy()}
+   * @param other
+   */
+  protected void setFromOriginal(AbstractBeanCollection<E> other) {
+    this.disableLazyLoad = other.disableLazyLoad;
+    this.ebeanServerName = other.ebeanServerName;
+    this.loader = other.loader;
+    this.ownerBean = other.ownerBean;
+    this.propertyName = other.propertyName;
+  }
 }

src/main/java/io/ebean/common/BeanList.java

@@ -541,4 +541,11 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
     }
 
   }
+
+  @Override
+  public BeanCollection<E> getShallowCopy() {
+    BeanList<E> copy = new BeanList<>(new CopyOnFirstWriteList<>(list));
+    copy.setFromOriginal(this);
+    return copy;
+  }
 }

src/main/java/io/ebean/common/BeanMap.java

@@ -340,4 +340,10 @@ public final class BeanMap<K, E> extends AbstractBeanCollection<E> implements Ma
     return map.values();
   }
 
+  @Override
+  public BeanCollection<E> getShallowCopy() {
+    BeanMap<K, E> copy = new BeanMap<>(new LinkedHashMap<>(map));
+    copy.setFromOriginal(this);
+    return copy;
+  }
 }

src/main/java/io/ebean/common/BeanSet.java

@@ -377,5 +377,11 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
       throw new IllegalStateException("This collection is in ReadOnly mode");
     }
   }
-
+  
+  @Override
+  public BeanCollection<E> getShallowCopy() {
+    BeanSet<E> copy = new BeanSet<>(new LinkedHashSet<>(set));
+    copy.setFromOriginal(this);
+    return copy;
+  }
 }

src/main/java/io/ebean/common/CopyOnFirstWriteList.java

@@ -0,0 +1,180 @@
+package io.ebean.common;
+
+import java.io.Serializable;
+import java.util.AbstractList;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.function.UnaryOperator;
+
+/**
+ * List that copies itself on first write access. Needed to keep memory footprint low and the ability
+ * to modify lists from cache.
+ * 
+ * @author Roland Praml, FOCONIS AG
+ */
+public final class CopyOnFirstWriteList<E> extends AbstractList<E> implements List<E>, Serializable {
+
+  private static final long serialVersionUID = 1L;
+
+  /**
+   * The underlying List implementation.
+   */
+  private List<E> list;
+  
+  
+  public CopyOnFirstWriteList(List<E> list) {
+    super();
+    this.list = list;
+  }
+
+  private volatile boolean copied = false;
+
+  @Override
+  public int size() {
+    return list.size();
+  }
+
+  @Override
+  public boolean isEmpty() {
+    return list.isEmpty();
+  }
+
+  @Override
+  public boolean contains(Object o) {
+    return list.contains(o);
+  }
+
+  @Override
+  public Object[] toArray() {
+    return list.toArray();
+  }
+
+  @Override
+  public <T> T[] toArray(T[] a) {
+    return list.toArray(a);
+  }
+
+  @Override
+  public boolean add(E e) {
+    checkCopyOnWrite();
+    return list.add(e);
+  }
+
+  @Override
+  public boolean remove(Object o) {
+    checkCopyOnWrite();
+    return list.remove(o);
+  }
+
+  @Override
+  public boolean containsAll(Collection<?> c) {
+    return list.containsAll(c);
+  }
+
+  @Override
+  public boolean addAll(Collection<? extends E> c) {
+    checkCopyOnWrite();
+    return list.addAll(c);
+  }
+
+  @Override
+  public boolean addAll(int index, Collection<? extends E> c) {
+    checkCopyOnWrite();
+    return list.addAll(index, c);
+  }
+
+  @Override
+  public boolean removeAll(Collection<?> c) {
+    checkCopyOnWrite();
+    return list.removeAll(c);
+  }
+
+  @Override
+  public boolean retainAll(Collection<?> c) {
+    checkCopyOnWrite();
+    return list.retainAll(c);
+  }
+
+  @Override
+  public void replaceAll(UnaryOperator<E> operator) {
+    checkCopyOnWrite();
+    list.replaceAll(operator);
+  }
+
+  @Override
+  public boolean removeIf(Predicate<? super E> filter) {
+    checkCopyOnWrite();
+    return list.removeIf(filter);
+  }
+
+  @Override
+  public void sort(Comparator<? super E> c) {
+    checkCopyOnWrite();
+    list.sort(c);
+  }
+
+  @Override
+  public void clear() {
+    if (!copied) {
+      list = new ArrayList<>();
+      copied = true;
+    }
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return list.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return list.hashCode();
+  }
+
+  @Override
+  public E get(int index) {
+    return list.get(index);
+  }
+
+  @Override
+  public E set(int index, E element) {
+    checkCopyOnWrite();
+    return list.set(index, element);
+  }
+
+  @Override
+  public void add(int index, E element) {
+    checkCopyOnWrite();
+    list.add(index, element);
+  }
+
+  @Override
+  public E remove(int index) {
+    checkCopyOnWrite();
+    return list.remove(index);
+  }
+
+  @Override
+  public int indexOf(Object o) {
+    return list.indexOf(o);
+  }
+
+  @Override
+  public int lastIndexOf(Object o) {
+    return list.lastIndexOf(o);
+  }
+  
+  private void checkCopyOnWrite() {
+    if (!copied) {
+      synchronized (this) {
+        if (!copied) {
+          list = new ArrayList<>(list);
+          copied = true;
+        }
+      }
+    }
+  }
+}

src/main/java/io/ebean/common/ModifyHolder.java

@@ -28,7 +28,10 @@ class ModifyHolder<E> implements Serializable {
    */
   private Set<E> modifyAdditions = new LinkedHashSet<>();
 
+  private boolean touched;
+
   void reset() {
+    touched = false;
     modifyDeletions = new LinkedHashSet<>();
     modifyAdditions = new LinkedHashSet<>();
   }
@@ -50,6 +53,7 @@ class ModifyHolder<E> implements Serializable {
 
   void modifyAddition(E bean) {
     if (bean != null) {
+      touched = true;
       // If it is to delete then just remove the deletion
       if (!undoDeletion(bean)) {
         // Insert
@@ -65,6 +69,7 @@ class ModifyHolder<E> implements Serializable {
   @SuppressWarnings("unchecked")
   void modifyRemoval(Object bean) {
     if (bean != null) {
+      touched = true;
       // If it is to be added then just remove the addition
       if (!undoAddition(bean)) {
         modifyDeletions.add((E) bean);
@@ -80,6 +85,14 @@ class ModifyHolder<E> implements Serializable {
     return modifyDeletions;
   }
 
+  /**
+   * Return true if the collection was touched in some way. This is still true even if
+   * a bean was removed and then added (which is not held as a modification).
+   */
+  boolean wasTouched() {
+    return touched;
+  }
+
   /**
    * Return true if there additions or removals.
    */

src/main/java/io/ebean/config/AbstractNamingConvention.java

@@ -1,11 +1,13 @@
 package io.ebean.config;
 
 import io.ebean.config.dbplatform.DatabasePlatform;
+import io.ebean.util.AnnotationUtil;
 
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 import javax.persistence.DiscriminatorValue;
 import javax.persistence.Inheritance;
 import javax.persistence.Table;
-import java.lang.annotation.Annotation;
 
 /**
  * Provides some base implementation for NamingConventions.
@@ -14,16 +16,15 @@ import java.lang.annotation.Annotation;
  */
 public abstract class AbstractNamingConvention implements NamingConvention {
 
+  private static final Pattern TABLE_REPLACE = Pattern.compile("{table}", Pattern.LITERAL);
+
+  private static final Pattern COLUMN_REPLACE = Pattern.compile("{column}", Pattern.LITERAL);
+
   /**
    * The Constant DEFAULT_SEQ_FORMAT.
    */
   public static final String DEFAULT_SEQ_FORMAT = "{table}_seq";
 
-  /**
-   * Sequence Format that includes the Primary Key column
-   */
-  public static final String TABLE_PKCOLUMN_SEQ_FORMAT = "{table}_{column}_seq";
-
   /**
    * The catalog.
    */
@@ -83,11 +84,11 @@ public abstract class AbstractNamingConvention implements NamingConvention {
 
   @Override
   public String getSequenceName(String tableName, String pkColumn) {
-    String s = sequenceFormat.replace("{table}", tableName);
+    String s = TABLE_REPLACE.matcher(sequenceFormat).replaceAll(Matcher.quoteReplacement(tableName));
     if (pkColumn == null) {
       pkColumn = "";
     }
-    return s.replace("{column}", pkColumn);
+    return COLUMN_REPLACE.matcher(s).replaceAll(Matcher.quoteReplacement(pkColumn));
   }
 
   /**
@@ -218,15 +219,10 @@ public abstract class AbstractNamingConvention implements NamingConvention {
    * Return true if this class is part of entity inheritance.
    */
   protected boolean hasInheritance(Class<?> supCls) {
-    return hasAnnotation(supCls, Inheritance.class) || hasAnnotation(supCls, DiscriminatorValue.class);
+    return AnnotationUtil.findAnnotationRecursive(supCls, Inheritance.class) != null
+        || AnnotationUtil.findAnnotation(supCls, DiscriminatorValue.class) != null;
   }
 
-  /**
-   * Return true if the class has the given annotation.
-   */
-  protected boolean hasAnnotation(Class<?> supCls, Class<? extends Annotation> annotation) {
-    return supCls.getAnnotation(annotation) != null;
-  }
 
   @Override
   public TableName getM2MJoinTableName(TableName lhsTable, TableName rhsTable) {
@@ -257,7 +253,7 @@ public abstract class AbstractNamingConvention implements NamingConvention {
    */
   protected TableName getTableNameFromAnnotation(Class<?> beanClass) {
 
-    final Table t = findTableAnnotation(beanClass);
+    final Table t = AnnotationUtil.findAnnotationRecursive(beanClass, Table.class);
 
     // Take the annotation if defined
     if (t != null && !isEmpty(t.name())) {
@@ -270,22 +266,6 @@ public abstract class AbstractNamingConvention implements NamingConvention {
     return null;
   }
 
-  /**
-   * Search recursively for an @Table in the class hierarchy.
-   */
-  protected Table findTableAnnotation(Class<?> cls) {
-    while (true) {
-      if (cls.equals(Object.class)) {
-        return null;
-      }
-      Table table = cls.getAnnotation(Table.class);
-      if (table != null) {
-        return table;
-      }
-      cls = cls.getSuperclass();
-    }
-  }
-
   /**
    * Replace back ticks (if they are used) with database platform specific
    * quoted identifiers.

src/main/java/io/ebean/config/AutoConfigure.java

@@ -0,0 +1,18 @@
+package io.ebean.config;
+
+/**
+ * Used to provide some automatic configuration early in the creation of an EbeanServer.
+ */
+public interface AutoConfigure {
+
+  /**
+   * Perform configuration for the ServerConfig prior to properties load.
+   */
+  void preConfigure(ServerConfig serverConfig);
+
+  /**
+   * Provide some configuration the ServerConfig prior to server creation but after properties have been applied.
+   */
+  void postConfigure(ServerConfig serverConfig);
+
+}

src/main/java/io/ebean/config/AutoTuneConfig.java

@@ -32,6 +32,15 @@ public class AutoTuneConfig {
   public AutoTuneConfig() {
   }
 
+  /**
+   * Return true if we are profiling or query tuning.
+   *
+   * If we are not doing either then we don't need a CallStack.
+   */
+  public boolean isActive() {
+    return profiling || queryTuning;
+  }
+
   /**
    * Return the name of the file that holds the query tuning information.
    */

src/main/java/io/ebean/config/ClassLoadConfig.java

@@ -54,6 +54,22 @@ public class ClassLoadConfig {
     return isPresent("javax.validation.constraints.NotNull");
   }
 
+  /**
+   * Return true if javax PostConstruct annotation is present (maybe not in java9).
+   * If not we don't support PostConstruct lifecycle events.
+   */
+  public boolean isJavaxPostConstructPresent() {
+    return isPresent("javax.annotation.PostConstruct");
+  }
+
+  /**
+   * Return true if javax JAXB is present (maybe not in java9).
+   * If not we don't try to parse or support 'extra ddl'.
+   */
+  public boolean isJavaxJAXBPresent() {
+    return isPresent("javax.xml.bind.JAXBException");
+  }
+
   /**
    * Return true if Jackson annotations like JsonIgnore are present.
    */

src/main/java/io/ebean/config/ContainerConfig.java

@@ -10,22 +10,82 @@ import java.util.Properties;
  */
 public class ContainerConfig {
 
-  protected boolean clusterActive;
+  private boolean active;
+  private String serviceName;
+  private String namespace;
+  private String podName;
+  private int port;
 
-  protected Properties properties;
+  private Properties properties;
+
+  /**
+   * Return the service name.
+   */
+  public String getServiceName() {
+    return serviceName;
+  }
+
+  /**
+   * Set the service name.
+   */
+  public void setServiceName(String serviceName) {
+    this.serviceName = serviceName;
+  }
+
+  /**
+   * Return the namespace.
+   */
+  public String getNamespace() {
+    return namespace;
+  }
+
+  /**
+   * Set the namespace.
+   */
+  public void setNamespace(String namespace) {
+    this.namespace = namespace;
+  }
+
+  /**
+   * Return the pod name.
+   */
+  public String getPodName() {
+    return podName;
+  }
+
+  /**
+   * Set the pod name.
+   */
+  public void setPodName(String podName) {
+    this.podName = podName;
+  }
+
+  /**
+   * Return the port to use.
+   */
+  public int getPort() {
+    return port;
+  }
+
+  /**
+   * Set the port to use.
+   */
+  public void setPort(int port) {
+    this.port = port;
+  }
 
   /**
    * Return true if clustering is active.
    */
-  public boolean isClusterActive() {
-    return clusterActive;
+  public boolean isActive() {
+    return active;
   }
 
   /**
    * Set to true for clustering to be active.
    */
-  public void setClusterActive(boolean clusterActive) {
-    this.clusterActive = clusterActive;
+  public void setActive(boolean active) {
+    this.active = active;
   }
 
   /**
@@ -47,7 +107,14 @@ public class ContainerConfig {
    */
   public void loadFromProperties(Properties properties) {
     this.properties = properties;
-    this.clusterActive = getProperty(properties, "ebean.cluster.active", clusterActive);
+    this.active = getProperty(properties, "ebean.cluster.active", active);
+    this.serviceName = properties.getProperty("ebean.cluster.serviceName", serviceName);
+    this.namespace = properties.getProperty("ebean.cluster.namespace", namespace);
+    this.podName = properties.getProperty("ebean.cluster.podName", podName);
+    String portParam = properties.getProperty("ebean.cluster.port");
+    if (portParam != null) {
+      this.port = Integer.parseInt(portParam);
+    }
   }
 
   /**

src/main/java/io/ebean/config/CustomDbTypeMapping.java

@@ -1,7 +1,7 @@
 package io.ebean.config;
 
 import io.ebean.config.dbplatform.DbType;
-import io.ebean.Platform;
+import io.ebean.annotation.Platform;
 
 /**
  * Custom mappings for DB types that override the default.

src/main/java/io/ebean/config/DbMigrationConfig.java

@@ -1,11 +1,16 @@
 package io.ebean.config;
 
-import io.ebean.Platform;
-import io.ebean.dbmigration.MigrationConfig;
-import io.ebean.dbmigration.MigrationRunner;
+import io.ebean.EbeanVersion;
+import io.ebean.annotation.Platform;
+import io.ebean.migration.MigrationConfig;
+import io.ebean.migration.MigrationRunner;
+import io.ebean.util.StringHelper;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
 import java.util.Map;
 import java.util.Properties;
 
@@ -16,6 +21,8 @@ public class DbMigrationConfig {
 
   protected static final Logger logger = LoggerFactory.getLogger(DbMigrationConfig.class);
 
+  protected MigrationConfig runnerConfig = new MigrationConfig();
+
   /**
    * The database platform to generate migration DDL for.
    */
@@ -105,6 +112,20 @@ public class DbMigrationConfig {
    */
   protected String dbPassword;
 
+  protected String patchInsertOn;
+
+  protected String patchResetChecksumOn;
+
+  /**
+   * Mode used to check non-null columns added via migration have a default value specified etc.
+   */
+  protected boolean strictMode = true;
+
+  /**
+   * Contains the DDL-header information.
+   */
+  protected String ddlHeader;
+
   /**
    * Return the DB platform to generate migration DDL for.
    * <p>
@@ -352,6 +373,73 @@ public class DbMigrationConfig {
     this.dbPassword = dbPassword;
   }
 
+  /**
+   * Return migration versions that should be added to history without running.
+   */
+  public String getPatchInsertOn() {
+    return patchInsertOn;
+  }
+
+  /**
+   * Set migration versions that should be added to history without running.
+   * <p>
+   * Value can be a string containing comma delimited list of version numbers.
+   * </p>
+   */
+  public void setPatchInsertOn(String patchInsertOn) {
+    this.patchInsertOn = patchInsertOn;
+  }
+
+  /**
+   * Return migration versions that should have their checksum reset and not run.
+   */
+  public String getPatchResetChecksumOn() {
+    return patchResetChecksumOn;
+  }
+
+  /**
+   * Returns a DDL header prepend for each DDL. E.g. for copyright headers
+   * You can use placeholders like ${version} or ${timestamp} in properties file.
+   */
+  public String getDdlHeader() {
+    return ddlHeader;
+  }
+
+  /**
+   * Set migration versions that should have their checksum reset and not run.
+   * <p>
+   * Value can be a string containing comma delimited list of version numbers.
+   * </p>
+   */
+  public void setPatchResetChecksumOn(String patchResetChecksumOn) {
+    this.patchResetChecksumOn = patchResetChecksumOn;
+  }
+
+  /**
+   * Return true if strict mode is used which includes a check that non-null columns have a default value.
+   */
+  public boolean isStrictMode() {
+    String envValue = readEnvironment("ddl.migration.strictMode");
+    if (!isEmpty(envValue)) {
+      return Boolean.parseBoolean(envValue.trim());
+    }
+    return strictMode;
+  }
+
+  /**
+   * Set to false to turn off strict mode allowing non-null columns to not have a default value.
+   */
+  public void setStrictMode(boolean strictMode) {
+    this.strictMode = strictMode;
+  }
+
+  /**
+   * Return the underlying migration runner configuration allowing for more advanced settings.
+   */
+  public MigrationConfig getRunnerConfig() {
+    return runnerConfig;
+  }
+
   /**
    * Load the settings from the PropertiesWrapper.
    */
@@ -370,18 +458,27 @@ public class DbMigrationConfig {
     generate = properties.getBoolean("migration.generate", generate);
     version = properties.get("migration.version", version);
     name = properties.get("migration.name", name);
+    patchInsertOn = properties.get("migration.patchInsertOn", patchInsertOn);
+    patchResetChecksumOn = properties.get("migration.patchResetChecksumOn", patchResetChecksumOn);
 
     runMigration = properties.getBoolean("migration.run", runMigration);
     metaTable = properties.get("migration.metaTable", metaTable);
     runPlaceholders = properties.get("migration.placeholders", runPlaceholders);
 
-    String adminUser = properties.get("datasource." + serverName + ".username", dbUsername);
-    adminUser = properties.get("datasource." + serverName + ".adminusername", adminUser);
+    //Do not set user and pass from "datasource.db.username"
+    //There is a null test in MigrationRunner::getConnection to handle this
+    //String adminUser = properties.get("datasource." + serverName + ".username", dbUsername);
+    String adminUser = properties.get("datasource." + serverName + ".adminusername", dbUsername);
     dbUsername = properties.get("migration.dbusername", adminUser);
 
-    String adminPwd = properties.get("datasource." + serverName + ".password", dbPassword);
-    adminPwd = properties.get("datasource." + serverName + ".adminpassword", adminPwd);
+    //String adminPwd = properties.get("datasource." + serverName + ".password", dbPassword);
+    String adminPwd = properties.get("datasource." + serverName + ".adminpassword", dbPassword);
     dbPassword = properties.get("migration.dbpassword", adminPwd);
+    ddlHeader = properties.get("ddl.header", ddlHeader);
+    if (ddlHeader != null && !ddlHeader.isEmpty()) {
+      ddlHeader = StringHelper.replaceString(ddlHeader, "${version}", EbeanVersion.getVersion());
+      ddlHeader = StringHelper.replaceString(ddlHeader, "${timestamp}", ZonedDateTime.now().format( DateTimeFormatter.ISO_INSTANT ));
+    }
   }
 
   /**
@@ -446,7 +543,6 @@ public class DbMigrationConfig {
    */
   public MigrationRunner createRunner(ClassLoader classLoader, Properties properties) {
 
-    MigrationConfig runnerConfig = new MigrationConfig();
     runnerConfig.setMetaTable(metaTable);
     runnerConfig.setApplySuffix(applySuffix);
     runnerConfig.setMigrationPath(migrationPath);
@@ -455,6 +551,12 @@ public class DbMigrationConfig {
     runnerConfig.setDbUsername(getDbUsername());
     runnerConfig.setDbPassword(getDbPassword());
     runnerConfig.setClassLoader(classLoader);
+    if (patchInsertOn != null) {
+      runnerConfig.setPatchInsertOn(patchInsertOn);
+    }
+    if (patchResetChecksumOn != null) {
+      runnerConfig.setPatchResetChecksumOn(patchResetChecksumOn);
+    }
     if (properties != null) {
       runnerConfig.load(properties);
     }

src/main/java/io/ebean/config/DbTypeConfig.java

@@ -1,124 +0,0 @@
-package io.ebean.config;
-
-import io.ebean.config.dbplatform.DbType;
-import io.ebean.config.dbplatform.IdType;
-import io.ebean.Platform;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Configuration for DB types such as UUID, Geometry etc.
- */
-public class DbTypeConfig {
-
-  /**
-   * The Geometry SRID value (default 4326).
-   */
-  private int geometrySRID = 4326;
-
-  /**
-   * Set for DB's that support both Sequence and Identity (and the default choice is not desired).
-   */
-  private IdType idType;
-
-  /**
-   * Setting to indicate if UUID should be stored as binary(16) or varchar(40) or native DB type (for H2 and Postgres).
-   */
-  private ServerConfig.DbUuid dbUuid = ServerConfig.DbUuid.AUTO_VARCHAR;
-
-  /**
-   * Modify the default mapping of standard types such as default precision for DECIMAL etc.
-   */
-  private List<CustomDbTypeMapping> customDbTypeMappings = new ArrayList<>();
-
-  /**
-   * Return the Geometry SRID.
-   */
-  public int getGeometrySRID() {
-    return geometrySRID;
-  }
-
-  /**
-   * Set the Geometry SRID.
-   */
-  public void setGeometrySRID(int geometrySRID) {
-    this.geometrySRID = geometrySRID;
-  }
-
-  /**
-   * Return the DB type used to store UUID.
-   */
-  public ServerConfig.DbUuid getDbUuid() {
-    return dbUuid;
-  }
-
-  /**
-   * Set the DB type used to store UUID.
-   */
-  public void setDbUuid(ServerConfig.DbUuid dbUuid) {
-    this.dbUuid = dbUuid;
-  }
-
-  /**
-   * Return the IdType to use (or null for the default choice).
-   */
-  public IdType getIdType() {
-    return idType;
-  }
-
-  /**
-   * Set the IdType to use (when the DB supports both SEQUENCE and IDENTITY and the default is not desired).
-   */
-  public void setIdType(IdType idType) {
-    this.idType = idType;
-  }
-
-  /**
-   * Add a custom type mapping.
-   * <p>
-   * <pre>{@code
-   *
-   *   // set the default mapping for BigDecimal.class/decimal
-   *   serverConfig.addCustomMapping(DbType.DECIMAL, "decimal(18,6)");
-   *
-   *   // set the default mapping for String.class/varchar but only for Postgres
-   *   serverConfig.addCustomMapping(DbType.VARCHAR, "text", Platform.POSTGRES);
-   *
-   * }</pre>
-   *
-   * @param type             The DB type this mapping should apply to
-   * @param columnDefinition The column definition that should be used
-   * @param platform         Optionally specify the platform this mapping should apply to.
-   */
-  public void addCustomMapping(DbType type, String columnDefinition, Platform platform) {
-    customDbTypeMappings.add(new CustomDbTypeMapping(type, columnDefinition, platform));
-  }
-
-  /**
-   * Add a custom type mapping that applies to all platforms.
-   * <p>
-   * <pre>{@code
-   *
-   *   // set the default mapping for BigDecimal/decimal
-   *   serverConfig.addCustomMapping(DbType.DECIMAL, "decimal(18,6)");
-   *
-   *   // set the default mapping for String/varchar
-   *   serverConfig.addCustomMapping(DbType.VARCHAR, "text");
-   *
-   * }</pre>
-   *
-   * @param type             The DB type this mapping should apply to
-   * @param columnDefinition The column definition that should be used
-   */
-  public void addCustomMapping(DbType type, String columnDefinition) {
-    customDbTypeMappings.add(new CustomDbTypeMapping(type, columnDefinition));
-  }
-
-  /**
-   * Return the list of custom type mappings.
-   */
-  public List<CustomDbTypeMapping> getCustomTypeMappings() {
-    return customDbTypeMappings;
-  }
-}

src/main/java/io/ebean/config/EncryptKeyManager.java

@@ -12,7 +12,7 @@ public interface EncryptKeyManager {
    * This gives the EncryptKeyManager the opportunity to get keys etc.
    * </p>
    */
-  default void initialise() {};
+  default void initialise() {}
 
   /**
    * Return the key used to encrypt and decrypt a property mapping to the given

src/main/java/io/ebean/config/MatchingNamingConvention.java

@@ -31,7 +31,7 @@ public class MatchingNamingConvention extends AbstractNamingConvention {
 
   @Override
   public String getColumnFromProperty(Class<?> beanClass, String propertyName) {
-    return propertyName;
+    return quoteIdentifiers(propertyName);
   }
 
   @Override
@@ -47,8 +47,11 @@ public class MatchingNamingConvention extends AbstractNamingConvention {
 
   @Override
   public String getForeignKey(String prefix, String fkProperty) {
+    prefix = databasePlatform.unQuote(prefix);
+    fkProperty = databasePlatform.unQuote(fkProperty);
     // add fkProperty as init caps
-    return prefix + fkProperty.substring(0, 1).toUpperCase() + fkProperty.substring(1);
+    String fullName = prefix + fkProperty.substring(0, 1).toUpperCase() + fkProperty.substring(1);
+    return quoteIdentifiers(fullName);
   }
 
 }

src/main/java/io/ebean/config/PlatformConfig.java

@@ -0,0 +1,335 @@
+package io.ebean.config;
+
+import io.ebean.annotation.Platform;
+import io.ebean.config.dbplatform.DbType;
+import io.ebean.config.dbplatform.IdType;
+import io.ebean.util.StringHelper;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+/**
+ * Configuration for DB types such as UUID, Geometry etc.
+ */
+public class PlatformConfig {
+
+  private boolean allQuotedIdentifiers;
+
+  /**
+   * The database boolean true value (typically either 1, T, or Y).
+   */
+  private String databaseBooleanTrue;
+
+  /**
+   * The database boolean false value (typically either 0, F or N).
+   */
+  private String databaseBooleanFalse;
+
+  /**
+   * For DB's using sequences this is the number of sequence values prefetched.
+   */
+  private int databaseSequenceBatchSize = 20;
+
+  /**
+   * Set for DB's that support both Sequence and Identity (and the default choice is not desired).
+   */
+  private IdType idType;
+
+  /**
+   * The Geometry SRID value (default 4326).
+   */
+  private int geometrySRID = 4326;
+
+  /**
+   * Setting to indicate if UUID should be stored as binary(16) or varchar(40) or native DB type (for H2 and Postgres).
+   */
+  private DbUuid dbUuid = DbUuid.AUTO_VARCHAR;
+
+  /**
+   * Modify the default mapping of standard types such as default precision for DECIMAL etc.
+   */
+  private List<CustomDbTypeMapping> customDbTypeMappings = new ArrayList<>();
+
+  /**
+   * Construct with defaults.
+   */
+  public PlatformConfig() {
+
+  }
+
+  /**
+   * Construct based on given config - typically for DbMigration generation with many platforms.
+   */
+  public PlatformConfig(PlatformConfig platformConfig) {
+    this.databaseBooleanFalse = platformConfig.databaseBooleanFalse;
+    this.databaseBooleanTrue = platformConfig.databaseBooleanTrue;
+    this.databaseSequenceBatchSize = platformConfig.databaseSequenceBatchSize;
+    this.idType = platformConfig.idType;
+    this.geometrySRID = platformConfig.geometrySRID;
+    this.dbUuid = platformConfig.dbUuid;
+  }
+
+  /**
+   * Return true if all DB column and table names should use quoted identifiers.
+   */
+  public boolean isAllQuotedIdentifiers() {
+    return allQuotedIdentifiers;
+  }
+
+  /**
+   * Set to true if all DB column and table names should use quoted identifiers.
+   */
+  public void setAllQuotedIdentifiers(boolean allQuotedIdentifiers) {
+    this.allQuotedIdentifiers = allQuotedIdentifiers;
+  }
+
+  /**
+   * Return a value used to represent TRUE in the database.
+   * <p>
+   * This is used for databases that do not support boolean natively.
+   * </p>
+   * <p>
+   * The value returned is either a Integer or a String (e.g. "1", or "T").
+   * </p>
+   */
+  public String getDatabaseBooleanTrue() {
+    return databaseBooleanTrue;
+  }
+
+  /**
+   * Set the value to represent TRUE in the database.
+   * <p>
+   * This is used for databases that do not support boolean natively.
+   * </p>
+   * <p>
+   * The value set is either a Integer or a String (e.g. "1", or "T").
+   * </p>
+   */
+  public void setDatabaseBooleanTrue(String databaseBooleanTrue) {
+    this.databaseBooleanTrue = databaseBooleanTrue;
+  }
+
+  /**
+   * Return a value used to represent FALSE in the database.
+   */
+  public String getDatabaseBooleanFalse() {
+    return databaseBooleanFalse;
+  }
+
+  /**
+   * Set the value used to represent FALSE in the database.
+   */
+  public void setDatabaseBooleanFalse(String databaseBooleanFalse) {
+    this.databaseBooleanFalse = databaseBooleanFalse;
+  }
+
+  /**
+   * Return the number of DB sequence values that should be preallocated.
+   */
+  public int getDatabaseSequenceBatchSize() {
+    return databaseSequenceBatchSize;
+  }
+
+  /**
+   * Set the number of DB sequence values that should be preallocated.
+   */
+  public void setDatabaseSequenceBatchSize(int databaseSequenceBatchSize) {
+    this.databaseSequenceBatchSize = databaseSequenceBatchSize;
+  }
+
+  /**
+   * Return the Geometry SRID.
+   */
+  public int getGeometrySRID() {
+    return geometrySRID;
+  }
+
+  /**
+   * Set the Geometry SRID.
+   */
+  public void setGeometrySRID(int geometrySRID) {
+    this.geometrySRID = geometrySRID;
+  }
+
+  /**
+   * Return the DB type used to store UUID.
+   */
+  public DbUuid getDbUuid() {
+    return dbUuid;
+  }
+
+  /**
+   * Set the DB type used to store UUID.
+   */
+  public void setDbUuid(DbUuid dbUuid) {
+    this.dbUuid = dbUuid;
+  }
+
+  /**
+   * Return the IdType to use (or null for the default choice).
+   */
+  public IdType getIdType() {
+    return idType;
+  }
+
+  /**
+   * Set the IdType to use (when the DB supports both SEQUENCE and IDENTITY and the default is not desired).
+   */
+  public void setIdType(IdType idType) {
+    this.idType = idType;
+  }
+
+  /**
+   * Add a custom type mapping.
+   * <p>
+   * <pre>{@code
+   *
+   *   // set the default mapping for BigDecimal.class/decimal
+   *   serverConfig.addCustomMapping(DbType.DECIMAL, "decimal(18,6)");
+   *
+   *   // set the default mapping for String.class/varchar but only for Postgres
+   *   serverConfig.addCustomMapping(DbType.VARCHAR, "text", Platform.POSTGRES);
+   *
+   * }</pre>
+   *
+   * @param type             The DB type this mapping should apply to
+   * @param columnDefinition The column definition that should be used
+   * @param platform         Optionally specify the platform this mapping should apply to.
+   */
+  public void addCustomMapping(DbType type, String columnDefinition, Platform platform) {
+    customDbTypeMappings.add(new CustomDbTypeMapping(type, columnDefinition, platform));
+  }
+
+  /**
+   * Add a custom type mapping that applies to all platforms.
+   * <p>
+   * <pre>{@code
+   *
+   *   // set the default mapping for BigDecimal/decimal
+   *   serverConfig.addCustomMapping(DbType.DECIMAL, "decimal(18,6)");
+   *
+   *   // set the default mapping for String/varchar
+   *   serverConfig.addCustomMapping(DbType.VARCHAR, "text");
+   *
+   * }</pre>
+   *
+   * @param type             The DB type this mapping should apply to
+   * @param columnDefinition The column definition that should be used
+   */
+  public void addCustomMapping(DbType type, String columnDefinition) {
+    customDbTypeMappings.add(new CustomDbTypeMapping(type, columnDefinition));
+  }
+
+  /**
+   * Return the list of custom type mappings.
+   */
+  public List<CustomDbTypeMapping> getCustomTypeMappings() {
+    return customDbTypeMappings;
+  }
+
+  public void loadSettings(PropertiesWrapper p) {
+
+    idType = p.getEnum(IdType.class, "idType", idType);
+    databaseSequenceBatchSize = p.getInt("databaseSequenceBatchSize", databaseSequenceBatchSize);
+    databaseBooleanTrue = p.get("databaseBooleanTrue", databaseBooleanTrue);
+    databaseBooleanFalse = p.get("databaseBooleanFalse", databaseBooleanFalse);
+
+    DbUuid dbUuid = p.getEnum(DbUuid.class, "dbuuid", null);
+    if (dbUuid != null) {
+      setDbUuid(dbUuid);
+    }
+    if (p.getBoolean("uuidStoreAsBinary", false)) {
+      setDbUuid(DbUuid.BINARY);
+    }
+
+    int srid = p.getInt("geometrySRID", 0);
+    if (srid > 0) {
+      setGeometrySRID(srid);
+    }
+
+    // Mapping is specified in the form: BOOLEAN=int(1);BIT=int(1);
+    String mapping = p.get("mapping");
+    if (mapping != null && !mapping.isEmpty()) {
+      Map<String, String> map = StringHelper.delimitedToMap(mapping, ";", "=");
+      for (Entry<String, String> entry : map.entrySet()) {
+        addCustomMapping(DbType.valueOf(entry.getKey()), entry.getValue());
+      }
+    }
+
+    boolean quotedIdentifiers = p.getBoolean("allQuotedIdentifiers", allQuotedIdentifiers);
+    if (quotedIdentifiers != allQuotedIdentifiers) {
+      // potentially also set to use matching naming convention
+      setAllQuotedIdentifiers(quotedIdentifiers);
+    }
+  }
+
+  /**
+   * Specify how UUID is stored.
+   */
+  public enum DbUuid {
+
+
+    /**
+     * Store using native UUID in H2 and Postgres and otherwise fallback to VARCHAR(40).
+     */
+    AUTO_VARCHAR(true, false, false),
+
+    /**
+     * Store using native UUID in H2 and Postgres and otherwise fallback to BINARY(16).
+     */
+    AUTO_BINARY(true, true, false),
+
+    /**
+     * Store using native UUID in H2 and Postgres and otherwise fallback to BINARY(16) with optimized packing.
+     */
+    AUTO_BINARY_OPTIMIZED(true, true, true),
+
+    /**
+     * Store using DB VARCHAR(40).
+     */
+    VARCHAR(false, false, false),
+
+    /**
+     * Store using DB BINARY(16).
+     */
+    BINARY(false, true, false),
+
+    /**
+     * Store using DB BINARY(16).
+     */
+    BINARY_OPTIMIZED(false, true, true);
+
+    boolean nativeType;
+    boolean binary;
+    boolean binaryOptimized;
+
+    DbUuid(boolean nativeType, boolean binary, boolean binaryOptimized) {
+      this.nativeType = nativeType;
+      this.binary = binary;
+      this.binaryOptimized = binaryOptimized;
+    }
+
+    /**
+     * Return true if native UUID type is preferred.
+     */
+    public boolean useNativeType() {
+      return nativeType;
+    }
+
+    /**
+     * Return true if BINARY(16) storage is preferred over VARCHAR(40).
+     */
+    public boolean useBinary() {
+      return binary;
+    }
+
+    /**
+     * Return true, if optimized packing should be used.
+     */
+    public boolean useBinaryOptimized() {
+      return binaryOptimized;
+    }
+  }
+}

src/main/java/io/ebean/config/ProfilingConfig.java

@@ -0,0 +1,148 @@
+package io.ebean.config;
+
+/**
+ * Configuration for transaction profiling.
+ */
+public class ProfilingConfig {
+
+  /**
+   * When true transaction profiling is enabled.
+   */
+  private boolean enabled;
+
+  /**
+   * Set true for verbose mode.
+   */
+  private boolean verbose;
+
+  /**
+   * The minimum transaction execution time to be included in profiling.
+   */
+  private long minimumMicros;
+
+  /**
+   * A specific set of profileIds to include in profiling.
+   */
+  private int[] includeProfileIds = {};
+
+  /**
+   * The number of profiles to write per file.
+   */
+  private long profilesPerFile = 1000;
+
+  private String directory = "profiling";
+
+  /**
+   * Return true if transaction profiling is enabled.
+   */
+  public boolean isEnabled() {
+    return enabled;
+  }
+
+  /**
+   * Set to true to enable transaction profiling.
+   */
+  public void setEnabled(boolean enabled) {
+    this.enabled = enabled;
+  }
+
+  /**
+   * Return true if verbose mode is used.
+   */
+  public boolean isVerbose() {
+    return verbose;
+  }
+
+  /**
+   * Set to true to use verbose mode.
+   */
+  public void setVerbose(boolean verbose) {
+    this.verbose = verbose;
+  }
+
+  /**
+   * Return the minimum transaction execution to be included in profiling.
+   */
+  public long getMinimumMicros() {
+    return minimumMicros;
+  }
+
+  /**
+   * Set the minimum transaction execution to be included in profiling.
+   */
+  public void setMinimumMicros(long minimumMicros) {
+    this.minimumMicros = minimumMicros;
+  }
+
+  /**
+   * Return the specific set of profileIds to include in profiling.
+   * When not set all transactions with profileIds are included.
+   */
+  public int[] getIncludeProfileIds() {
+    return includeProfileIds;
+  }
+
+  /**
+   * Set a specific set of profileIds to include in profiling.
+   * When not set all transactions with profileIds are included.
+   */
+  public void setIncludeProfileIds(int[] includeProfileIds) {
+    this.includeProfileIds = includeProfileIds;
+  }
+
+  /**
+   * Return the number of profiles to write to a single file.
+   */
+  public long getProfilesPerFile() {
+    return profilesPerFile;
+  }
+
+  /**
+   * Set the number of profiles to write to a single file.
+   */
+  public void setProfilesPerFile(long profilesPerFile) {
+    this.profilesPerFile = profilesPerFile;
+  }
+
+  /**
+   * Return the directory profiling files are put into.
+   */
+  public String getDirectory() {
+    return directory;
+  }
+
+  /**
+   * Set the directory profiling files are put into.
+   */
+  public void setDirectory(String directory) {
+    this.directory = directory;
+  }
+
+  /**
+   * Load setting from properties.
+   */
+  public void loadSettings(PropertiesWrapper p, String name) {
+
+    enabled = p.getBoolean("profiling", enabled);
+    verbose = p.getBoolean("profiling.verbose", verbose);
+
+    directory = p.get("profiling.directory", directory);
+    profilesPerFile = p.getLong("profiling.profilesPerFile", profilesPerFile);
+    minimumMicros = p.getLong("profiling.minimumMicros", minimumMicros);
+
+    String includeIds = p.get("profiling.includeProfileIds");
+    if (includeIds != null) {
+      includeProfileIds = parseIds(includeIds);
+    }
+  }
+
+  private int[] parseIds(String includeIds) {
+
+    String[] ids = includeIds.split(",");
+    int[] vals = new int[ids.length];
+    for (int i = 0; i < ids.length; i++) {
+      vals[i] = Integer.parseInt(ids[i]);
+    }
+    return vals;
+  }
+}

src/main/java/io/ebean/config/PropertiesWrapper.java

@@ -10,44 +10,23 @@ public class PropertiesWrapper {
 
   protected final String serverName;
 
-  protected final PropertyMap propertyMap;
+  private final ClassLoadConfig classLoadConfig;
 
   /**
    * Construct with a prefix, serverName and properties.
    */
-  public PropertiesWrapper(String prefix, String serverName, Properties properties) {
+  public PropertiesWrapper(String prefix, String serverName, Properties properties, ClassLoadConfig classLoadConfig) {
     this.serverName = serverName;
     this.prefix = prefix;
-    this.propertyMap = PropertyMapLoader.load(null, properties);
-    this.properties = propertyMap.asProperties();
+    this.properties = properties;
+    this.classLoadConfig = classLoadConfig;
   }
 
   /**
    * Construct without prefix of serverName.
    */
-  public PropertiesWrapper(Properties properties) {
-    this(null, null, properties);
-  }
-
-  /**
-   * Internal copy constructor when changing prefix.
-   */
-  protected PropertiesWrapper(String prefix, String serverName, PropertyMap propertyMap, Properties properties) {
-    this.serverName = serverName;
-    this.prefix = prefix;
-    this.propertyMap = propertyMap;
-    this.properties = properties;
-  }
-
-  /**
-   * Return a PropertiesWrapper instance with a different prefix but same underlying properties.
-   * <p/>
-   * Used when wanting to use "datasource" as the prefix rather than "ebean".
-   * <p/>
-   * The returning instance should only be used in a read only fashion.
-   */
-  public PropertiesWrapper withPrefix(String prefix) {
-    return new PropertiesWrapper(prefix, serverName, propertyMap, properties);
+  public PropertiesWrapper(Properties properties, ClassLoadConfig classLoadConfig) {
+    this(null, null, properties, classLoadConfig);
   }
 
   /**
@@ -57,16 +36,6 @@ public class PropertiesWrapper {
     return serverName;
   }
 
-  /**
-   * Return as Properties with lower case keys and after evaluation and additional properties loading has occurred.
-   * <p>
-   * Ebean has historically ignored the case of keys hence returning the Properties with all the keys lower cased.
-   * </p>
-   */
-  public Properties asPropertiesLowerCase() {
-    return properties;
-  }
-
   /**
    * Get a property with no default value.
    */
@@ -90,17 +59,21 @@ public class PropertiesWrapper {
 
     String value = null;
     if (serverName != null && prefix != null) {
-      value = propertyMap.get(prefix + "." + serverName + "." + key, null);
+      value = internalGet(prefix + "." + serverName + "." + key);
     }
     if (value == null && prefix != null) {
-      value = propertyMap.get(prefix + "." + key, null);
+      value = internalGet(prefix + "." + key);
     }
     if (value == null) {
-      value = propertyMap.get(key, null);
+      value = internalGet(key);
     }
     return value == null ? defaultValue : value;
   }
 
+  private String internalGet(String key) {
+    return properties.getProperty(key);
+  }
+
   /**
    * Return a double property value.
    */
@@ -145,4 +118,30 @@ public class PropertiesWrapper {
     return (level == null) ? defaultValue : Enum.valueOf(enumType, level.toUpperCase());
   }
 
+  /**
+   * Return the instance to use (can be null) for the given plugin.
+   *
+   * @param pluginType the type of plugin
+   * @param key        properties key
+   * @param instance   existing instance
+   */
+  public <T> T createInstance(Class<T> pluginType, String key, T instance) {
+
+    if (instance != null) {
+      return instance;
+    }
+    String classname = get(key, null);
+    return createInstance(pluginType, classname);
+  }
+
+  /**
+   * Return the instance to use (can be null) for the given plugin.
+   *
+   * @param pluginType the type of plugin
+   * @param classname  the implementation class as per properties
+   */
+  @SuppressWarnings("unchecked")
+  public <T> T createInstance(Class<T> pluginType, String classname) {
+    return classname == null ? null : (T) classLoadConfig.newInstance(classname);
+  }
 }

src/main/java/io/ebean/config/PropertyExpression.java

@@ -1,178 +0,0 @@
-package io.ebean.config;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import javax.naming.InitialContext;
-import javax.naming.NamingException;
-
-/**
- * Helper used to evaluate expressions such as ${CATALINA_HOME}.
- * <p>
- * The expressions can contain environment variables, system properties or JNDI
- * properties. JNDI expressions take the form ${jndi:propertyName} where you
- * substitute propertyName with the name of the jndi property you wish to
- * evaluate.
- * </p>
- */
-final class PropertyExpression {
-
-  private static final Logger logger = LoggerFactory.getLogger(PropertyExpression.class);
-
-  /**
-   * Prefix for looking up JNDI Environment variable.
-   */
-  private static final String JAVA_COMP_ENV = "java:comp/env/";
-
-  /**
-   * Used to detect the start of an expression.
-   */
-  private static final String START = "${";
-
-  /**
-   * Used to detect the end of an expression.
-   */
-  private static final String END = "}";
-
-  /**
-   * Specify the PropertyHolder.
-   */
-  private PropertyExpression() {
-  }
-
-  /**
-   * Return the property value evaluating and replacing any expressions such as
-   * ${CATALINA_HOME}.
-   */
-  static String eval(String val, PropertyMap map) {
-    if (val == null) {
-      return null;
-    }
-    int sp = val.indexOf(START);
-    if (sp > -1) {
-      int ep = val.indexOf(END, sp + 1);
-      if (ep > -1) {
-        return eval(val, sp, ep, map);
-      }
-    }
-    return val;
-  }
-
-  /**
-   * Convert the expression using JNDI, Environment variables, System Properties
-   * or existing an property in SystemProperties itself.
-   */
-  private static String evaluateExpression(String exp, PropertyMap map) {
-
-    if (isJndiExpression(exp)) {
-      // JNDI property lookup...
-      String val = getJndiProperty(exp);
-      if (val != null) {
-        return val;
-      }
-    }
-
-    // check Environment Variables first
-    String val = System.getenv(exp);
-    if (val == null) {
-      // then check system properties
-      val = System.getProperty(exp);
-    }
-    if (val == null && map != null) {
-      // then check PropertyMap
-      val = map.get(exp);
-    }
-
-    if (val != null) {
-      return val;
-
-    } else {
-      // unable to evaluate yet... but maybe later based on the order
-      // in which properties are being set/loaded. You can use
-      // GlobalProperties.evaluateExpressions() to get any unresolved
-      // expressions to be evaluated
-      logger.debug("Unable to evaluate expression [{}]", exp);
-      return null;
-    }
-  }
-
-  private static String eval(String val, int sp, int ep, PropertyMap map) {
-
-    StringBuilder sb = new StringBuilder();
-    sb.append(val.substring(0, sp));
-
-    String cal = evalExpression(val, sp, ep, map);
-    sb.append(cal);
-
-    eval(val, ep + 1, sb, map);
-
-    return sb.toString();
-  }
-
-  private static void eval(String val, int startPos, StringBuilder sb, PropertyMap map) {
-    if (startPos < val.length()) {
-      int sp = val.indexOf(START, startPos);
-      if (sp > -1) {
-        // append what is between the last token and the new one (if startPos ==
-        // sp nothing gets added)
-        sb.append(val.substring(startPos, sp));
-        int ep = val.indexOf(END, sp + 1);
-        if (ep > -1) {
-          String cal = evalExpression(val, sp, ep, map);
-          sb.append(cal);
-          eval(val, ep + 1, sb, map);
-          return;
-        }
-      }
-    }
-    // append what is left...
-    sb.append(val.substring(startPos));
-  }
-
-  private static String evalExpression(String val, int sp, int ep, PropertyMap map) {
-    // trim off start and end ${ and }
-    String exp = val.substring(sp + START.length(), ep);
-
-    // evaluate the variable
-    String evaled = evaluateExpression(exp, map);
-    if (evaled != null) {
-      return evaled;
-    } else {
-      // unable to evaluate at this stage (maybe later)
-      return START + exp + END;
-    }
-  }
-
-  private static boolean isJndiExpression(String exp) {
-    return exp.startsWith("JNDI:") || exp.startsWith("jndi:");
-  }
-
-  /**
-   * Returns null if JNDI is not setup or if the property is not found.
-   *
-   * @param key the key of the JNDI Environment property including a JNDI: prefix.
-   */
-  private static String getJndiProperty(String key) {
-
-    try {
-      // remove the JNDI: prefix
-      key = key.substring(5);
-
-      return (String) getJndiObject(key);
-
-    } catch (NamingException ex) {
-      return null;
-    }
-  }
-
-  /**
-   * Similar to getProperty but throws NamingException if JNDI is not setup or
-   * if the property is not found.
-   */
-  private static Object getJndiObject(String key) throws NamingException {
-
-    InitialContext ctx = new InitialContext();
-    return ctx.lookup(JAVA_COMP_ENV + key);
-  }
-
-}

src/main/java/io/ebean/config/PropertyMap.java

@@ -1,168 +0,0 @@
-package io.ebean.config;
-
-import java.io.Serializable;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Properties;
-import java.util.Set;
-
-/**
- * A map like structure of properties.
- * <p/>
- * Handles evaluation of expressions like ${home} and provides convenience methods for int, long and boolean.
- */
-public final class PropertyMap implements Serializable {
-
-  private static final long serialVersionUID = 1L;
-
-  private final LinkedHashMap<String, String> map = new LinkedHashMap<>();
-
-  /**
-   * Return properties loaded from test-ebean.properties.
-   */
-  public static Properties testProperties() {
-    PropertyMap propertyMap = PropertyMapLoader.loadTestProperties();
-    return (propertyMap == null) ? new Properties() : propertyMap.asProperties();
-  }
-
-  public static Properties defaultProperties() {
-    PropertyMap propertyMap = PropertyMapLoader.loadGlobalProperties();
-    return (propertyMap == null) ? new Properties() : propertyMap.asProperties();
-  }
-
-  public static boolean loadTestProperties() {
-    String disable = System.getProperty("disableTestProperties");
-    return (disable == null || !disable.equalsIgnoreCase("true"));
-  }
-
-  @Override
-  public String toString() {
-    return map.toString();
-  }
-
-  /**
-   * Return as standard Properties.
-   */
-  public Properties asProperties() {
-    Properties properties = new Properties();
-    for (Entry<String, String> e : entrySet()) {
-      properties.put(e.getKey(), e.getValue());
-    }
-    return properties;
-  }
-
-  /**
-   * Go through all the properties and evaluate any expressions that have not
-   * been resolved.
-   */
-  public void evaluateProperties() {
-
-    for (Entry<String, String> e : entrySet()) {
-      String key = e.getKey();
-      String val = e.getValue();
-      String eval = eval(val);
-      if (eval != null && !eval.equals(val)) {
-        put(key, eval);
-      }
-    }
-  }
-
-  /**
-   * Returns the value with expressions like ${home} evaluated using system properties and environment variables.
-   */
-  public synchronized String eval(String val) {
-    return PropertyExpression.eval(val, this);
-  }
-
-  /**
-   * Return the boolean property value with a given default.
-   */
-  public synchronized boolean getBoolean(String key, boolean defaultValue) {
-    String value = get(key);
-    if (value == null) {
-      return defaultValue;
-    } else {
-      return Boolean.parseBoolean(value);
-    }
-  }
-
-  /**
-   * Return the int property value with a given default.
-   */
-  public synchronized int getInt(String key, int defaultValue) {
-    String value = get(key);
-    if (value == null) {
-      return defaultValue;
-    } else {
-      return Integer.parseInt(value);
-    }
-  }
-
-  /**
-   * Return the long property value with a given default.
-   */
-  public synchronized long getLong(String key, long defaultValue) {
-    String value = get(key);
-    if (value == null) {
-      return defaultValue;
-    } else {
-      return Long.parseLong(value);
-    }
-  }
-
-  /**
-   * Return the string property value with a given default.
-   */
-  public synchronized String get(String key, String defaultValue) {
-    String value = map.get(key.toLowerCase());
-    return value == null ? defaultValue : value;
-  }
-
-  /**
-   * Return the property value returning null if there is no value defined.
-   */
-  public synchronized String get(String key) {
-    return map.get(key.toLowerCase());
-  }
-
-  /**
-   * Put all evaluating any expressions in the values.
-   */
-  public synchronized void putEvalAll(Map<String, String> keyValueMap) {
-
-    for (Map.Entry<String, String> entry : keyValueMap.entrySet()) {
-      putEval(entry.getKey(), entry.getValue());
-    }
-  }
-
-  /**
-   * Put a single key value evaluating any expressions in the value.
-   */
-  public synchronized String putEval(String key, String value) {
-    value = PropertyExpression.eval(value, this);
-    return map.put(key.toLowerCase(), value);
-  }
-
-  /**
-   * Put a single key value with no expression evaluation.
-   */
-  public synchronized String put(String key, String value) {
-    return map.put(key.toLowerCase(), value);
-  }
-
-  /**
-   * Remove an entry.
-   */
-  public synchronized String remove(String key) {
-    return map.remove(key.toLowerCase());
-  }
-
-  /**
-   * Return the entries.
-   */
-  public synchronized Set<Entry<String, String>> entrySet() {
-    return map.entrySet();
-  }
-
-}

src/main/java/io/ebean/config/PropertyMapLoader.java

@@ -1,159 +0,0 @@
-package io.ebean.config;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.Map;
-import java.util.Properties;
-
-/**
- * Helper used to load the ebean.properties into a PropertyMap.
- */
-final class PropertyMapLoader {
-
-  private static final Logger logger = LoggerFactory.getLogger(PropertyMapLoader.class);
-
-  /**
-   * Load the <code>test-ebean.properties</code>.
-   */
-  public static PropertyMap loadTestProperties() {
-    if (!PropertyMap.loadTestProperties()) {
-      return new PropertyMap();
-    }
-    return load(null, "test-ebean.properties");
-  }
-
-  /**
-   * Load the ebean.properties (and test-ebean.properties if present).
-   */
-  public static PropertyMap loadGlobalProperties() {
-
-    boolean loadTestProperties = false;
-    String fileName = System.getenv("EBEAN_PROPS_FILE");
-    if (fileName == null) {
-      fileName = System.getProperty("ebean.props.file");
-      if (fileName == null) {
-        loadTestProperties = PropertyMap.loadTestProperties();
-        fileName = "ebean.properties";
-      }
-    }
-
-    PropertyMap map = load(null, fileName);
-    if (loadTestProperties) {
-      // load test properties if present in classpath
-      map = load(map, "test-ebean.properties");
-    }
-    return map;
-  }
-
-  /**
-   * Load the file returning the property map.
-   *
-   * @param p        an existing property map to load into.
-   * @param fileName the name of the properties file to load.
-   */
-  public static PropertyMap load(PropertyMap p, String fileName) {
-
-    InputStream is = findInputStream(fileName);
-    if (is == null) {
-      return p;
-    } else {
-      return load(p, is);
-    }
-  }
-
-  /**
-   * Load the InputStream returning the property map.
-   *
-   * @param p  an existing property map to load into.
-   * @param in the InputStream of the properties file to load.
-   */
-  public static PropertyMap load(PropertyMap p, InputStream in) {
-
-    Properties props = new Properties();
-    try {
-      props.load(in);
-      in.close();
-      return load(p, props);
-
-    } catch (IOException e) {
-      throw new RuntimeException(e);
-    }
-  }
-
-  public static PropertyMap load(PropertyMap p, Properties props) {
-
-    if (p == null) {
-      p = new PropertyMap();
-    }
-
-    // put values in initially without any evaluation
-    for (Map.Entry<Object, Object> entry : props.entrySet()) {
-      String key = ((String) entry.getKey()).toLowerCase();
-      String val = ((String) entry.getValue());
-      if (val != null) {
-        val = val.trim();
-      }
-      p.put(key, val);
-    }
-
-    p.evaluateProperties();
-
-    String otherProps = p.remove("load.properties");
-    if (otherProps == null) {
-      otherProps = p.remove("load.properties.override");
-    }
-    if (otherProps != null) {
-      otherProps = otherProps.replace("\\", "/");
-      InputStream is = findInputStream(otherProps);
-      if (is != null) {
-        logger.debug("loading properties from {}", otherProps);
-        load(p, is);
-      } else {
-        logger.error("load.properties " + otherProps + " not found.");
-      }
-    }
-
-    return p;
-  }
-
-  /**
-   * Find the input stream given the file name.
-   */
-  private static InputStream findInputStream(String fileName) {
-
-    if (fileName == null) {
-      throw new NullPointerException("fileName is null?");
-    }
-
-    try {
-      File f = new File(fileName);
-
-      if (f.exists()) {
-        logger.debug("{} found in file system", fileName);
-        return new FileInputStream(f);
-      } else {
-        InputStream in = findInClassPath(fileName);
-        if (in != null) {
-          logger.debug("{} found in classpath", fileName);
-        }
-        return in;
-      }
-
-    } catch (FileNotFoundException ex) {
-      // already made the check so this
-      // should never be thrown
-      throw new RuntimeException(ex);
-    }
-  }
-
-  private static InputStream findInClassPath(String fileName) {
-    return Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
-  }
-
-}

src/main/java/io/ebean/config/ServerConfig.java

@@ -2,17 +2,18 @@ package io.ebean.config;
 
 import com.fasterxml.jackson.core.JsonFactory;
 import io.ebean.EbeanServerFactory;
-import io.ebean.PersistBatch;
 import io.ebean.PersistenceContextScope;
-import io.ebean.Platform;
 import io.ebean.Query;
 import io.ebean.Transaction;
 import io.ebean.annotation.Encrypted;
+import io.ebean.annotation.PersistBatch;
+import io.ebean.annotation.Platform;
 import io.ebean.cache.ServerCachePlugin;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbEncrypt;
 import io.ebean.config.dbplatform.DbType;
-import io.ebean.dbmigration.MigrationRunner;
+import io.ebean.config.dbplatform.IdType;
+import io.ebean.config.properties.PropertiesLoader;
 import io.ebean.event.BeanFindController;
 import io.ebean.event.BeanPersistController;
 import io.ebean.event.BeanPersistListener;
@@ -27,10 +28,13 @@ import io.ebean.event.changelog.ChangeLogRegister;
 import io.ebean.event.readaudit.ReadAuditLogger;
 import io.ebean.event.readaudit.ReadAuditPrepare;
 import io.ebean.meta.MetaInfoManager;
+import io.ebean.migration.MigrationRunner;
+import io.ebean.util.StringHelper;
 import org.avaje.datasource.DataSourceConfig;
 
 import javax.sql.DataSource;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
@@ -80,12 +84,6 @@ public class ServerConfig {
    */
   private String name = "db";
 
-  /**
-   * When false (default) H2 automatically uses DDL generate and run
-   * (i.e. assumes we are running tests using in memory h2).
-   */
-  private boolean h2ProductionMode;
-
   /**
    * Typically configuration type objects that are passed by this ServerConfig
    * to plugins. For example - IgniteConfiguration passed to Ignite plugin.
@@ -185,11 +183,6 @@ public class ServerConfig {
    */
   private DatabasePlatform databasePlatform;
 
-  /**
-   * For DB's using sequences this is the number of sequence values prefetched.
-   */
-  private int databaseSequenceBatchSize = 20;
-
   /**
    * JDBC fetchSize hint when using findList.  Defaults to 0 leaving it up to the JDBC driver.
    */
@@ -277,11 +270,29 @@ public class ServerConfig {
    */
   private DataSource dataSource;
 
+  /**
+   * The read only data source (can be null).
+   */
+  private DataSource readOnlyDataSource;
+
   /**
    * The data source config.
    */
   private DataSourceConfig dataSourceConfig = new DataSourceConfig();
 
+  /**
+   * When true create a read only DataSource using readOnlyDataSourceConfig defaulting values from dataSourceConfig.
+   * I believe this will default to true in some future release (as it has a nice performance benefit).
+   * <p>
+   * autoReadOnlyDataSource is an unfortunate name for this config option but I haven't come up with a better one.
+   */
+  private boolean autoReadOnlyDataSource;
+
+  /**
+   * Optional configuration for a read only data source.
+   */
+  private DataSourceConfig readOnlyDataSourceConfig = new DataSourceConfig();
+
   /**
    * The db migration config (migration resource path etc).
    */
@@ -309,16 +320,6 @@ public class ServerConfig {
    */
   private String dataSourceJndiName;
 
-  /**
-   * The database boolean true value (typically either 1, T, or Y).
-   */
-  private String databaseBooleanTrue;
-
-  /**
-   * The database boolean false value (typically either 0, F or N).
-   */
-  private String databaseBooleanFalse;
-
   /**
    * The naming convention.
    */
@@ -345,9 +346,19 @@ public class ServerConfig {
   private boolean updatesDeleteMissingChildren = true;
 
   /**
-   * Database type configuration.
+   * Database platform configuration.
    */
-  private DbTypeConfig dbTypeConfig = new DbTypeConfig();
+  private PlatformConfig platformConfig = new PlatformConfig();
+
+  /**
+   * The UUID version to use.
+   */
+  private UuidVersion uuidVersion = UuidVersion.VERSION4;
+
+  /**
+   * The UUID state file (for Version 1 UUIDs).
+   */
+  private String uuidStateFile = "ebean-uuid.state";
 
   private List<IdGenerator> idGenerators = new ArrayList<>();
   private List<BeanFindController> findControllers = new ArrayList<>();
@@ -370,6 +381,8 @@ public class ServerConfig {
 
   private ChangeLogRegister changeLogRegister;
 
+  private boolean changeLogAsync = true;
+
   private ReadAuditLogger readAuditLogger;
 
   private ReadAuditPrepare readAuditPrepare;
@@ -435,11 +448,46 @@ public class ServerConfig {
 
   private String jodaLocalTimeMode;
 
+  /**
+   * Time to live for query plans - defaults to 5 minutes.
+   */
+  private int queryPlanTTLSeconds = 60 * 5;
+
   /**
    * Set to true to globally disable L2 caching (typically for performance testing).
    */
   private boolean disableL2Cache;
 
+
+  /**
+   * Should the javax.validation.constraints.NotNull enforce a notNull column in DB.
+   * If set to false, use io.ebean.annotation.NotNull or Column(nullable=true).
+   */
+  private boolean useJavaxValidationNotNull = true;
+
+  /**
+   * Generally we want to perform L2 cache notification in the background and not impact
+   * the performance of executing transactions.
+   */
+  private boolean notifyL2CacheInForeground;
+
+  /**
+   * The time in millis used to determine when a query is alerted for being slow.
+   */
+  private long slowQueryMillis;
+
+  /**
+   * The listener for processing slow query events.
+   */
+  private SlowQueryListener slowQueryListener;
+
+  private ProfilingConfig profilingConfig = new ProfilingConfig();
+
+  /**
+   * Controls the default order by id setting of queries. See {@link Query#orderById(boolean)}
+   */
+  private boolean defaultOrderById = false;
+
   /**
    * Construct a Server Configuration for programmatically creating an EbeanServer.
    */
@@ -447,6 +495,49 @@ public class ServerConfig {
 
   }
 
+  /**
+   * Return the slow query time in millis.
+   */
+  public long getSlowQueryMillis() {
+    return slowQueryMillis;
+  }
+
+  /**
+   * Set the slow query time in millis.
+   */
+  public void setSlowQueryMillis(long slowQueryMillis) {
+    this.slowQueryMillis = slowQueryMillis;
+  }
+
+  /**
+   * Return the slow query event listener.
+   */
+  public SlowQueryListener getSlowQueryListener() {
+    return slowQueryListener;
+  }
+
+  /**
+   * Set the slow query event listener.
+   */
+  public void setSlowQueryListener(SlowQueryListener slowQueryListener) {
+    this.slowQueryListener = slowQueryListener;
+  }
+
+
+  /**
+   * Sets the default orderById setting for queries.
+   */
+  public void setDefaultOrderById(boolean defaultOrderById) {
+    this.defaultOrderById = defaultOrderById;
+  }
+
+  /**
+   * Returns the default orderById setting for queries.
+   */
+  public boolean isDefaultOrderById() {
+    return defaultOrderById;
+  }
+
   /**
    * Put a service object into configuration such that it can be passed to a plugin.
    * <p>
@@ -527,27 +618,6 @@ public class ServerConfig {
     this.name = name;
   }
 
-  /**
-   * Return true if H2 should be used in production mode.
-   * <p>
-   * Otherwise it is assumed we are using H2 for testing and DDL generate and run is turned on.
-   * </p>
-   */
-  public boolean isH2ProductionMode() {
-    return h2ProductionMode;
-  }
-
-  /**
-   * Set to true for H2 to be used in production mode.
-   * <p>
-   * Do this when we want to use H2 and not have the DDL generation and run automatically turned on.
-   * Otherwise it is assumed we are using H2 for testing purposes.
-   * </p>
-   */
-  public void setH2ProductionMode(boolean h2ProductionMode) {
-    this.h2ProductionMode = h2ProductionMode;
-  }
-
   /**
    * Return the container / clustering configuration.
    * <p/>
@@ -854,7 +924,7 @@ public class ServerConfig {
    * </p>
    */
   public void setDatabaseSequenceBatchSize(int databaseSequenceBatchSize) {
-    this.databaseSequenceBatchSize = databaseSequenceBatchSize;
+    platformConfig.setDatabaseSequenceBatchSize(databaseSequenceBatchSize);
   }
 
   /**
@@ -955,6 +1025,20 @@ public class ServerConfig {
     this.changeLogIncludeInserts = changeLogIncludeInserts;
   }
 
+  /**
+   * Return true (default) if the changelog should be written async.
+   */
+  public boolean isChangeLogAsync() {
+    return changeLogAsync;
+  }
+
+  /**
+   * Sets if the changelog should be written async (default = true).
+   */
+  public void setChangeLogAsync(boolean changeLogAsync) {
+    this.changeLogAsync = changeLogAsync;
+  }
+
   /**
    * Return the ReadAuditLogger to use.
    */
@@ -990,6 +1074,20 @@ public class ServerConfig {
     this.readAuditPrepare = readAuditPrepare;
   }
 
+  /**
+   * Return the configuration for profiling.
+   */
+  public ProfilingConfig getProfilingConfig() {
+    return profilingConfig;
+  }
+
+  /**
+   * Set the configuration for profiling.
+   */
+  public void setProfilingConfig(ProfilingConfig profilingConfig) {
+    this.profilingConfig = profilingConfig;
+  }
+
   /**
    * Return the DB migration configuration.
    */
@@ -1008,14 +1106,14 @@ public class ServerConfig {
    * Return the Geometry SRID.
    */
   public int getGeometrySRID() {
-    return dbTypeConfig.getGeometrySRID();
+    return platformConfig.getGeometrySRID();
   }
 
   /**
    * Set the Geometry SRID.
    */
   public void setGeometrySRID(int geometrySRID) {
-    dbTypeConfig.setGeometrySRID(geometrySRID);
+    platformConfig.setGeometrySRID(geometrySRID);
   }
 
   /**
@@ -1301,6 +1399,30 @@ public class ServerConfig {
     this.namingConvention = namingConvention;
   }
 
+  /**
+   * Return true if all DB column and table names should use quoted identifiers.
+   */
+  public boolean isAllQuotedIdentifiers() {
+    return platformConfig.isAllQuotedIdentifiers();
+  }
+
+  /**
+   * Set to true if all DB column and table names should use quoted identifiers.
+   */
+  public void setAllQuotedIdentifiers(boolean allQuotedIdentifiers) {
+    platformConfig.setAllQuotedIdentifiers(allQuotedIdentifiers);
+    if (allQuotedIdentifiers) {
+      adjustNamingConventionForAllQuoted();
+    }
+  }
+
+  private void adjustNamingConventionForAllQuoted() {
+    if (namingConvention instanceof UnderscoreNamingConvention) {
+      // we need to use matching naming convention
+      this.namingConvention = new MatchingNamingConvention();
+    }
+  }
+
   /**
    * Return true if this EbeanServer is a Document store only instance (has no JDBC DB).
    */
@@ -1371,6 +1493,28 @@ public class ServerConfig {
     this.dataSource = dataSource;
   }
 
+  /**
+   * Return the read only DataSource.
+   */
+  public DataSource getReadOnlyDataSource() {
+    return readOnlyDataSource;
+  }
+
+  /**
+   * Set the read only DataSource.
+   * <p>
+   * Note that the DataSource is expected to use AutoCommit true mode avoiding the need
+   * for explicit commit (or rollback).
+   * </p>
+   * <p>
+   * This read only DataSource will be used for implicit query only transactions. It is not
+   * used if the transaction is created explicitly or if the query is an update or delete query.
+   * </p>
+   */
+  public void setReadOnlyDataSource(DataSource readOnlyDataSource) {
+    this.readOnlyDataSource = readOnlyDataSource;
+  }
+
   /**
    * Return the configuration to build a DataSource using Ebean's own DataSource
    * implementation.
@@ -1387,6 +1531,42 @@ public class ServerConfig {
     this.dataSourceConfig = dataSourceConfig;
   }
 
+  /**
+   * Return true if Ebean should create a DataSource for use with implicit read only transactions.
+   */
+  public boolean isAutoReadOnlyDataSource() {
+    return autoReadOnlyDataSource;
+  }
+
+  /**
+   * Set to true if Ebean should create a DataSource for use with implicit read only transactions.
+   */
+  public void setAutoReadOnlyDataSource(boolean autoReadOnlyDataSource) {
+    this.autoReadOnlyDataSource = autoReadOnlyDataSource;
+  }
+
+  /**
+   * Return the configuration for the read only DataSource.
+   * <p>
+   * This is only used if autoReadOnlyDataSource is true.
+   * </p>
+   * <p>
+   * The driver, url, username and password default to the configuration for the main DataSource if they are not
+   * set on this configuration. This means there is actually no need to set any configuration here and we only
+   * set configuration for url, username and password etc if it is different from the main DataSource.
+   * </p>
+   */
+  public DataSourceConfig getReadOnlyDataSourceConfig() {
+    return readOnlyDataSourceConfig;
+  }
+
+  /**
+   * Set the configuration for the read only DataSource.
+   */
+  public void setReadOnlyDataSourceConfig(DataSourceConfig readOnlyDataSourceConfig) {
+    this.readOnlyDataSourceConfig = readOnlyDataSourceConfig;
+  }
+
   /**
    * Return the JNDI name of the DataSource to use.
    */
@@ -1452,7 +1632,7 @@ public class ServerConfig {
    * </p>
    */
   public String getDatabaseBooleanTrue() {
-    return databaseBooleanTrue;
+    return platformConfig.getDatabaseBooleanTrue();
   }
 
   /**
@@ -1465,7 +1645,7 @@ public class ServerConfig {
    * </p>
    */
   public void setDatabaseBooleanTrue(String databaseTrue) {
-    this.databaseBooleanTrue = databaseTrue;
+    platformConfig.setDatabaseBooleanTrue(databaseTrue);
   }
 
   /**
@@ -1478,7 +1658,7 @@ public class ServerConfig {
    * </p>
    */
   public String getDatabaseBooleanFalse() {
-    return databaseBooleanFalse;
+    return platformConfig.getDatabaseBooleanFalse();
   }
 
   /**
@@ -1491,14 +1671,14 @@ public class ServerConfig {
    * </p>
    */
   public void setDatabaseBooleanFalse(String databaseFalse) {
-    this.databaseBooleanFalse = databaseFalse;
+    this.platformConfig.setDatabaseBooleanFalse(databaseFalse);
   }
 
   /**
    * Return the number of DB sequence values that should be preallocated.
    */
   public int getDatabaseSequenceBatchSize() {
-    return databaseSequenceBatchSize;
+    return platformConfig.getDatabaseSequenceBatchSize();
   }
 
   /**
@@ -1517,7 +1697,7 @@ public class ServerConfig {
    * </p>
    */
   public void setDatabaseSequenceBatch(int databaseSequenceBatchSize) {
-    this.databaseSequenceBatchSize = databaseSequenceBatchSize;
+    this.platformConfig.setDatabaseSequenceBatchSize(databaseSequenceBatchSize);
   }
 
   /**
@@ -1544,7 +1724,7 @@ public class ServerConfig {
    * that you don't have access to.
    * </p>
    * <p>
-   * Values are oracle, h2, postgres, mysql, mssqlserver2005.
+   * Values are oracle, h2, postgres, mysql, sqlserver16, sqlserver17.
    * </p>
    */
   public void setDatabasePlatformName(String databasePlatformName) {
@@ -1567,11 +1747,20 @@ public class ServerConfig {
    */
   public void setDatabasePlatform(DatabasePlatform databasePlatform) {
     this.databasePlatform = databasePlatform;
-    if (!h2ProductionMode && databasePlatform != null && databasePlatform.isPlatform(Platform.H2)) {
-      // we are using H2 to run tests so turn on DDL generation and run
-      this.ddlGenerate = true;
-      this.ddlRun = true;
-    }
+  }
+
+  /**
+   * Return the preferred DB platform IdType.
+   */
+  public IdType getIdType() {
+    return platformConfig.getIdType();
+  }
+
+  /**
+   * Set the preferred DB platform IdType.
+   */
+  public void setIdType(IdType idType) {
+    this.platformConfig.setIdType(idType);
   }
 
   /**
@@ -1684,15 +1873,50 @@ public class ServerConfig {
   /**
    * Return the configuration for DB types (such as UUID and custom mappings).
    */
-  public DbTypeConfig getDbTypeConfig() {
-    return dbTypeConfig;
+  public PlatformConfig getPlatformConfig() {
+    return platformConfig;
+  }
+
+  /**
+   * Set the configuration for DB platform (such as UUID and custom mappings).
+   */
+  public void setPlatformConfig(PlatformConfig platformConfig) {
+    this.platformConfig = platformConfig;
   }
 
   /**
    * Set the DB type used to store UUID.
    */
-  public void setDbUuid(DbUuid dbUuid) {
-    this.dbTypeConfig.setDbUuid(dbUuid);
+  public void setDbUuid(PlatformConfig.DbUuid dbUuid) {
+    this.platformConfig.setDbUuid(dbUuid);
+  }
+
+  /**
+   * Returns the UUID version mode.
+   */
+  public UuidVersion getUuidVersion() {
+    return uuidVersion;
+  }
+
+  /**
+   * Sets the UUID version mode.
+   */
+  public void setUuidVersion(UuidVersion uuidVersion) {
+    this.uuidVersion = uuidVersion;
+  }
+
+  /**
+   * Return the UUID state file.
+   */
+  public String getUuidStateFile() {
+    return uuidStateFile;
+  }
+
+  /**
+   * Set the UUID state file.
+   */
+  public void setUuidStateFile(String uuidStateFile) {
+    this.uuidStateFile = uuidStateFile;
   }
 
   /**
@@ -1732,6 +1956,16 @@ public class ServerConfig {
     this.durationWithNanos = durationWithNanos;
   }
 
+  /**
+   * Set to true to run DB migrations on server start.
+   * <p>
+   * This is the same as serverConfig.getMigrationConfig().setRunMigration(). We have added this method here
+   * as it is often the only thing we need to configure for migrations.
+   */
+  public void setRunMigration(boolean runMigration){
+    migrationConfig.setRunMigration(runMigration);
+  }
+
   /**
    * Set to true to generate the "create all" DDL on startup.
    * <p>
@@ -2120,7 +2354,7 @@ public class ServerConfig {
    * @param platform         Optionally specify the platform this mapping should apply to.
    */
   public void addCustomMapping(DbType type, String columnDefinition, Platform platform) {
-    dbTypeConfig.addCustomMapping(type, columnDefinition, platform);
+    platformConfig.addCustomMapping(type, columnDefinition, platform);
   }
 
   /**
@@ -2140,7 +2374,7 @@ public class ServerConfig {
    * @param columnDefinition The column definition that should be used
    */
   public void addCustomMapping(DbType type, String columnDefinition) {
-    dbTypeConfig.addCustomMapping(type, columnDefinition);
+    platformConfig.addCustomMapping(type, columnDefinition);
   }
 
   /**
@@ -2409,7 +2643,8 @@ public class ServerConfig {
    * Load settings from ebean.properties.
    */
   public void loadFromProperties() {
-    loadFromProperties(PropertyMap.defaultProperties());
+    this.properties = PropertiesLoader.load();
+    configureFromProperties();
   }
 
   /**
@@ -2417,24 +2652,46 @@ public class ServerConfig {
    */
   public void loadFromProperties(Properties properties) {
     // keep the properties used for configuration so that these are available for plugins
-    this.properties = properties;
-    PropertiesWrapper p = new PropertiesWrapper("ebean", name, properties);
-    loadSettings(p);
+    this.properties = PropertiesLoader.eval(properties);
+    configureFromProperties();
   }
 
   /**
+   * Load the settings from the given properties
+   */
+  private void configureFromProperties() {
+    List<AutoConfigure> autoConfigures = autoConfiguration();
+    loadSettings(new PropertiesWrapper("ebean", name, properties, classLoadConfig));
+    for (AutoConfigure autoConfigure : autoConfigures) {
+      autoConfigure.postConfigure(this);
+    }
+  }
+
+  /**
+   * Use a 'plugin' to provide automatic configuration. Intended for automatic testing
+   * configuration with Docker containers via ebean-test-config.
+   */
+  private List<AutoConfigure> autoConfiguration() {
+    List<AutoConfigure> list = new ArrayList<>();
+    for (AutoConfigure autoConfigure : serviceLoad(AutoConfigure.class)) {
+      autoConfigure.preConfigure(this);
+      list.add(autoConfigure);
+    }
+    return list;
+  }
+
+  /**
+   * Deprecated - this does nothing now, we always try to read test configuration.
+   * <p>
    * Load settings from test-ebean.properties and do nothing if the properties is not found.
    * <p>
    * This is typically used when test-ebean.properties is put into the test class path and used
    * to configure Ebean for running tests.
    * </p>
    */
+  @Deprecated
   public void loadTestProperties() {
-    Properties properties = PropertyMap.testProperties();
-    if (!properties.isEmpty()) {
-      PropertiesWrapper p = new PropertiesWrapper("ebean", name, properties);
-      loadSettings(p);
-    }
+    // do nothing now ... as we always try to read test configuration and that should only
   }
 
   /**
@@ -2444,34 +2701,6 @@ public class ServerConfig {
     return properties;
   }
 
-  /**
-   * Return the instance to use (can be null) for the given plugin.
-   *
-   * @param properties the properties
-   * @param pluginType the type of plugin
-   * @param key        properties key
-   * @param instance   existing instance
-   */
-  protected <T> T createInstance(PropertiesWrapper properties, Class<T> pluginType, String key, T instance) {
-
-    if (instance != null) {
-      return instance;
-    }
-    String classname = properties.get(key, null);
-    return createInstance(pluginType, classname);
-  }
-
-  /**
-   * Return the instance to use (can be null) for the given plugin.
-   *
-   * @param pluginType the type of plugin
-   * @param classname  the implementation class as per properties
-   */
-  @SuppressWarnings("unchecked")
-  protected <T> T createInstance(Class<T> pluginType, String classname) {
-    return classname == null ? null : (T) classLoadConfig.newInstance(classname);
-  }
-
   /**
    * loads the data source settings to preserve existing behaviour. IMHO, if someone has set the datasource config already,
    * they don't want the settings to be reloaded and reset. This allows a descending class to override this behaviour and prevent it
@@ -2481,6 +2710,7 @@ public class ServerConfig {
    */
   protected void loadDataSourceSettings(PropertiesWrapper p) {
     dataSourceConfig.loadSettings(p.properties, name);
+    readOnlyDataSourceConfig.loadSettings(p.properties, name);
   }
 
   /**
@@ -2502,8 +2732,12 @@ public class ServerConfig {
    */
   protected void loadSettings(PropertiesWrapper p) {
 
+    profilingConfig.loadSettings(p, name);
     migrationConfig.loadSettings(p, name);
-
+    platformConfig.loadSettings(p);
+    if (platformConfig.isAllQuotedIdentifiers()) {
+      adjustNamingConventionForAllQuoted();
+    }
     namingConvention = createNamingConvention(p, namingConvention);
     if (namingConvention != null) {
       namingConvention.loadFromProperties(p);
@@ -2523,28 +2757,28 @@ public class ServerConfig {
     }
     loadDocStoreSettings(p);
 
-    int srid = p.getInt("geometrySRID", 0);
-    if (srid > 0) {
-      dbTypeConfig.setGeometrySRID(srid);
-    }
-
+    queryPlanTTLSeconds = p.getInt("queryPlanTTLSeconds", queryPlanTTLSeconds);
+    slowQueryMillis = p.getLong("slowQueryMillis", slowQueryMillis);
     docStoreOnly = p.getBoolean("docStoreOnly", docStoreOnly);
     disableL2Cache = p.getBoolean("disableL2Cache", disableL2Cache);
+    notifyL2CacheInForeground = p.getBoolean("notifyL2CacheInForeground", notifyL2CacheInForeground);
     explicitTransactionBeginMode = p.getBoolean("explicitTransactionBeginMode", explicitTransactionBeginMode);
     autoCommitMode = p.getBoolean("autoCommitMode", autoCommitMode);
     useJtaTransactionManager = p.getBoolean("useJtaTransactionManager", useJtaTransactionManager);
+    useJavaxValidationNotNull = p.getBoolean("useJavaxValidationNotNull", useJavaxValidationNotNull);
+    autoReadOnlyDataSource = p.getBoolean("autoReadOnlyDataSource", autoReadOnlyDataSource);
 
     backgroundExecutorSchedulePoolSize = p.getInt("backgroundExecutorSchedulePoolSize", backgroundExecutorSchedulePoolSize);
     backgroundExecutorShutdownSecs = p.getInt("backgroundExecutorShutdownSecs", backgroundExecutorShutdownSecs);
     disableClasspathSearch = p.getBoolean("disableClasspathSearch", disableClasspathSearch);
-    currentUserProvider = createInstance(p, CurrentUserProvider.class, "currentUserProvider", currentUserProvider);
-    databasePlatform = createInstance(p, DatabasePlatform.class, "databasePlatform", databasePlatform);
-    encryptKeyManager = createInstance(p, EncryptKeyManager.class, "encryptKeyManager", encryptKeyManager);
-    encryptDeployManager = createInstance(p, EncryptDeployManager.class, "encryptDeployManager", encryptDeployManager);
-    encryptor = createInstance(p, Encryptor.class, "encryptor", encryptor);
-    dbEncrypt = createInstance(p, DbEncrypt.class, "dbEncrypt", dbEncrypt);
+    currentUserProvider = p.createInstance(CurrentUserProvider.class, "currentUserProvider", currentUserProvider);
+    databasePlatform = p.createInstance(DatabasePlatform.class, "databasePlatform", databasePlatform);
+    encryptKeyManager = p.createInstance(EncryptKeyManager.class, "encryptKeyManager", encryptKeyManager);
+    encryptDeployManager = p.createInstance(EncryptDeployManager.class, "encryptDeployManager", encryptDeployManager);
+    encryptor = p.createInstance(Encryptor.class, "encryptor", encryptor);
+    dbEncrypt = p.createInstance(DbEncrypt.class, "dbEncrypt", dbEncrypt);
     dbOffline = p.getBoolean("dbOffline", dbOffline);
-    serverCachePlugin = createInstance(p, ServerCachePlugin.class, "serverCachePlugin", serverCachePlugin);
+    serverCachePlugin = p.createInstance(ServerCachePlugin.class, "serverCachePlugin", serverCachePlugin);
 
     if (packages != null) {
       String packagesProp = p.get("search.packages", p.get("packages", null));
@@ -2573,6 +2807,7 @@ public class ServerConfig {
 
     persistenceContextScope = PersistenceContextScope.valueOf(p.get("persistenceContextScope", "TRANSACTION"));
 
+    changeLogAsync = p.getBoolean("changeLogAsync", changeLogAsync);
     changeLogIncludeInserts = p.getBoolean("changeLogIncludeInserts", changeLogIncludeInserts);
     expressionEqualsWithNullAsNoop = p.getBoolean("expressionEqualsWithNullAsNoop", expressionEqualsWithNullAsNoop);
     expressionNativeIlike = p.getBoolean("expressionNativeIlike", expressionNativeIlike);
@@ -2584,18 +2819,12 @@ public class ServerConfig {
     dataSourceJndiName = p.get("dataSourceJndiName", dataSourceJndiName);
     jdbcFetchSizeFindEach = p.getInt("jdbcFetchSizeFindEach", jdbcFetchSizeFindEach);
     jdbcFetchSizeFindList = p.getInt("jdbcFetchSizeFindList", jdbcFetchSizeFindList);
-    databaseSequenceBatchSize = p.getInt("databaseSequenceBatchSize", databaseSequenceBatchSize);
-    databaseBooleanTrue = p.get("databaseBooleanTrue", databaseBooleanTrue);
-    databaseBooleanFalse = p.get("databaseBooleanFalse", databaseBooleanFalse);
     databasePlatformName = p.get("databasePlatformName", databasePlatformName);
+    defaultOrderById = p.getBoolean("defaultOrderById", defaultOrderById);
+
+    uuidVersion = p.getEnum(UuidVersion.class, "uuidVersion", uuidVersion);
+    uuidStateFile = p.get("uuidStateFile", uuidStateFile);
 
-    DbUuid dbUuid = p.getEnum(DbUuid.class, "dbuuid", null);
-    if (dbUuid != null) {
-      dbTypeConfig.setDbUuid(dbUuid);
-    }
-    if (p.getBoolean("uuidStoreAsBinary", false)) {
-      dbTypeConfig.setDbUuid(DbUuid.BINARY);
-    }
     localTimeWithNanos = p.getBoolean("localTimeWithNanos", localTimeWithNanos);
     jodaLocalTimeMode = p.get("jodaLocalTimeMode", jodaLocalTimeMode);
 
@@ -2610,19 +2839,33 @@ public class ServerConfig {
       jsonDateTime = JsonConfig.DateTime.MILLIS;
     }
 
-    h2ProductionMode = p.getBoolean("h2ProductionMode", h2ProductionMode);
     ddlGenerate = p.getBoolean("ddl.generate", ddlGenerate);
     ddlRun = p.getBoolean("ddl.run", ddlRun);
     ddlCreateOnly = p.getBoolean("ddl.createOnly", ddlCreateOnly);
     ddlInitSql = p.get("ddl.initSql", ddlInitSql);
     ddlSeedSql = p.get("ddl.seedSql", ddlSeedSql);
 
+    // read tenant-configuration from config:
+    // tenant.mode = NONE | DB | SCHEMA | CATALOG | PARTITION
+    String mode = p.get("tenant.mode");
+    if (mode != null) {
+      for (TenantMode value : TenantMode.values()) {
+        if (value.name().equalsIgnoreCase(mode)) {
+          tenantMode = value;
+          break;
+        }
+      }
+    }
+
+    currentTenantProvider = p.createInstance(CurrentTenantProvider.class, "tenant.currentTenantProvider", currentTenantProvider);
+    tenantCatalogProvider = p.createInstance(TenantCatalogProvider.class, "tenant.catalogProvider", tenantCatalogProvider);
+    tenantSchemaProvider = p.createInstance(TenantSchemaProvider.class, "tenant.schemaProvider", tenantSchemaProvider);
+    tenantPartitionColumn = p.get("tenant.partitionColumn", tenantPartitionColumn);
     classes = getClasses(p);
   }
 
   private NamingConvention createNamingConvention(PropertiesWrapper properties, NamingConvention namingConvention) {
-
-    NamingConvention nc = createInstance(properties, NamingConvention.class, "namingconvention", null);
+    NamingConvention nc = properties.createInstance(NamingConvention.class, "namingconvention", null);
     return (nc != null) ? nc : namingConvention;
   }
 
@@ -2641,10 +2884,9 @@ public class ServerConfig {
 
     List<Class<?>> classes = new ArrayList<>();
 
-    String[] split = classNames.split("[ ,;]");
-    for (String aSplit : split) {
-      String cn = aSplit.trim();
-      if (!cn.isEmpty() && !"class".equalsIgnoreCase(cn)) {
+    String[] split = StringHelper.splitNames(classNames);
+    for (String cn : split) {
+      if (!"class".equalsIgnoreCase(cn)) {
         try {
           classes.add(Class.forName(cn));
         } catch (ClassNotFoundException e) {
@@ -2658,16 +2900,16 @@ public class ServerConfig {
 
   private List<String> getSearchJarsPackages(String searchPackages) {
 
-    List<String> hitList = new ArrayList<>();
-
     if (searchPackages != null) {
+      String[] entries = StringHelper.splitNames(searchPackages);
 
-      String[] entries = searchPackages.split("[ ,;]");
-      for (String entry : entries) {
-        hitList.add(entry.trim());
-      }
+      List<String> hitList = new ArrayList<>(entries.length);
+      Collections.addAll(hitList, entries);
+
+      return hitList;
+    } else {
+      return new ArrayList<>();
     }
-    return hitList;
   }
 
   /**
@@ -2750,6 +2992,58 @@ public class ServerConfig {
     this.disableL2Cache = disableL2Cache;
   }
 
+  /**
+   * Returns if we use javax.validation.constraints.NotNull
+   */
+  public boolean isUseJavaxValidationNotNull() {
+    return useJavaxValidationNotNull;
+  }
+
+  /**
+   * Controls if Ebean should ignore <code>&x64;javax.validation.contstraints.NotNull</code>
+   * with respect to generating a <code>NOT NULL</code> column.
+   * <p>
+   * Normally when Ebean sees javax NotNull annotation it means that column is defined as NOT NULL.
+   * Set this to <code>false</code> and the javax NotNull annotation is effectively ignored (and
+   * we instead use Ebean's own NotNull annotation or JPA Column(nullable=false) annotation.
+   */
+  public void setUseJavaxValidationNotNull(boolean useJavaxValidationNotNull) {
+    this.useJavaxValidationNotNull = useJavaxValidationNotNull;
+  }
+
+  /**
+   * Return true if L2 cache notification should run in the foreground.
+   */
+  public boolean isNotifyL2CacheInForeground() {
+    return notifyL2CacheInForeground;
+  }
+
+  /**
+   * Set this to true to run L2 cache notification in the foreground.
+   * <p>
+   * In general we don't want to do that as when we use a distributed cache (like Ignite, Hazelcast etc)
+   * we are making network calls and we prefer to do this in background and not impact the response time
+   * of the executing transaction.
+   * </p>
+   */
+  public void setNotifyL2CacheInForeground(boolean notifyL2CacheInForeground) {
+    this.notifyL2CacheInForeground = notifyL2CacheInForeground;
+  }
+
+  /**
+   * Return the query plan time to live.
+   */
+  public int getQueryPlanTTLSeconds() {
+    return queryPlanTTLSeconds;
+  }
+
+  /**
+   * Set the query plan time to live.
+   */
+  public void setQueryPlanTTLSeconds(int queryPlanTTLSeconds) {
+    this.queryPlanTTLSeconds = queryPlanTTLSeconds;
+  }
+
   /**
    * Run the DB migration against the DataSource.
    */
@@ -2762,50 +3056,29 @@ public class ServerConfig {
   }
 
   /**
-   * Specify how UUID is stored.
+   * Create a new PlatformConfig based of the one held but with overridden properties by reading
+   * properties with the given path and prefix.
+   * <p>
+   * Typically used in Db Migration generation for many platform targets that might have different
+   * configuration for IdType, UUID, quoted identifiers etc.
+   * </p>
+   *
+   * @param propertiesPath The properties path used for loading and setting properties
+   * @param platformPrefix The prefix used for loading and setting properties
+   * @return A copy of the PlatformConfig with overridden properties
    */
-  public enum DbUuid {
+  public PlatformConfig newPlatformConfig(String propertiesPath, String platformPrefix) {
 
-    /**
-     * Store using native UUID in H2 and Postgres and otherwise fallback to VARCHAR(40).
-     */
-    AUTO_VARCHAR(true, false),
+    PropertiesWrapper p = new PropertiesWrapper(propertiesPath, platformPrefix, properties, classLoadConfig);
 
-    /**
-     * Store using native UUID in H2 and Postgres and otherwise fallback to BINARY(16).
-     */
-    AUTO_BINARY(true, true),
+    PlatformConfig config = new PlatformConfig(platformConfig);
+    config.loadSettings(p);
+    return config;
+  }
 
-    /**
-     * Store using DB VARCHAR(40).
-     */
-    VARCHAR(false, false),
-
-    /**
-     * Store using DB BINARY(16).
-     */
-    BINARY(false, true);
-
-    boolean nativeType;
-    boolean binary;
-
-    DbUuid(boolean nativeType, boolean binary) {
-      this.nativeType = nativeType;
-      this.binary = binary;
-    }
-
-    /**
-     * Return true if native UUID type is preferred.
-     */
-    public boolean useNativeType() {
-      return nativeType;
-    }
-
-    /**
-     * Return true if BINARY(16) storage is preferred over VARCHAR(40).
-     */
-    public boolean useBinary() {
-      return binary;
-    }
+  public enum UuidVersion {
+    VERSION4,
+    VERSION1,
+    VERSION1RND
   }
 }

src/main/java/io/ebean/config/SlowQueryEvent.java

@@ -0,0 +1,59 @@
+package io.ebean.config;
+
+import io.ebean.bean.ObjectGraphNode;
+
+/**
+ * Slow query event.
+ */
+public class SlowQueryEvent {
+
+  private final String sql;
+
+  private final long timeMillis;
+
+  private final int rowCount;
+
+  private final ObjectGraphNode originNode;
+
+  /**
+   * Construct with the SQL and execution time in millis.
+   */
+  public SlowQueryEvent(String sql, long timeMillis, int rowCount, ObjectGraphNode originNode) {
+    this.sql = sql;
+    this.timeMillis = timeMillis;
+    this.rowCount = rowCount;
+    this.originNode = originNode;
+  }
+
+  /**
+   * Return the SQL for the slow query.
+   */
+  public String getSql() {
+    return sql;
+  }
+
+  /**
+   * Return the execution time in millis.
+   */
+  public long getTimeMillis() {
+    return timeMillis;
+  }
+
+  /**
+   * Return the total row count associated with the query.
+   */
+  public int getRowCount() {
+    return rowCount;
+  }
+
+  /**
+   * Return the origin point for the root query.
+   * <p>
+   * Typically the <code>originNode.getOriginQueryPoint().getFirstStackElement()</code> provides the stack line that
+   * shows the code that invoked the query.
+   * </p>
+   */
+  public ObjectGraphNode getOriginNode() {
+    return originNode;
+  }
+}

src/main/java/io/ebean/config/SlowQueryListener.java

@@ -0,0 +1,13 @@
+package io.ebean.config;
+
+/**
+ * Listener for slow query events.
+ */
+@FunctionalInterface
+public interface SlowQueryListener {
+
+  /**
+   * Process a slow query event.
+   */
+  void process(SlowQueryEvent event);
+}

src/main/java/io/ebean/config/TenantDataSourceProvider.java

@@ -16,5 +16,5 @@ public interface TenantDataSourceProvider {
   /**
    * Shutdown all the DataSources.
    */
-  default void shutdown(boolean deregisterDriver) {};
+  default void shutdown(boolean deregisterDriver) {}
 }

src/main/java/io/ebean/config/TenantMode.java

@@ -8,32 +8,40 @@ public enum TenantMode {
   /**
    * No multi-tenancy.
    */
-  NONE(false),
+  NONE(false, true),
 
   /**
    * Each Tenant has their own Database (javax.sql.DataSource)
    */
-  DB(true),
+  DB(true, false),
 
   /**
    * Each Tenant has their own Database schema.
    */
-  SCHEMA(true),
+  SCHEMA(true, false),
 
   /**
    * Each Tenant has their own Database but with in connection pool
    */
-  CATALOG(true),
+  CATALOG(true, false),
 
   /**
    * Tenants share tables but have a discriminator/partition column that partitions the data.
    */
-  PARTITION(false);
+  PARTITION(false, true),
 
+  /**
+   * Each Tenant has their own Database (javax.sql.DataSource), and there is also one master-database
+   * (that holds configuration e.g.)
+   */
+  DB_WITH_MASTER(true, true);
+  
   boolean dynamicDataSource;
+  boolean ddlEnabled;
 
-  TenantMode(boolean dynamicDataSource) {
+  TenantMode(boolean dynamicDataSource, boolean ddlEnabled) {
     this.dynamicDataSource = dynamicDataSource;
+    this.ddlEnabled = ddlEnabled;
   }
 
   /**
@@ -42,4 +50,12 @@ public enum TenantMode {
   public boolean isDynamicDataSource() {
     return dynamicDataSource;
   }
+  
+  /**
+   * Returns true, if DDL is enabled.
+   */
+  public boolean isDdlEnabled() {
+    return ddlEnabled;
+  }
+ 
 }

src/main/java/io/ebean/config/dbplatform/DatabasePlatform.java

@@ -2,13 +2,11 @@ package io.ebean.config.dbplatform;
 
 import io.ebean.BackgroundExecutor;
 import io.ebean.Query;
+import io.ebean.annotation.PersistBatch;
+import io.ebean.annotation.Platform;
 import io.ebean.config.CustomDbTypeMapping;
-import io.ebean.config.DbTypeConfig;
-import io.ebean.PersistBatch;
-import io.ebean.Platform;
-import io.ebean.config.ServerConfig;
-import io.ebean.dbmigration.ddlgeneration.DdlHandler;
-import io.ebean.dbmigration.ddlgeneration.platform.PlatformDdl;
+import io.ebean.config.PlatformConfig;
+import io.ebean.util.JdbcClose;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -64,6 +62,13 @@ public class DatabasePlatform {
    */
   protected String closeQuote = "\"";
 
+  protected String concatOperator = "||";
+
+  /**
+   * When set to true all db column names and table names use quoted identifiers.
+   */
+  protected boolean allQuotedIdentifiers;
+
   /**
    * For limit/offset, row_number etc limiting of SQL queries.
    */
@@ -94,6 +99,10 @@ public class DatabasePlatform {
    */
   protected DbIdentity dbIdentity = new DbIdentity();
 
+  protected boolean sequenceBatchMode = true;
+
+  protected int sequenceBatchSize = 20;
+
   /**
    * The history support for this database platform.
    */
@@ -136,9 +145,25 @@ public class DatabasePlatform {
   private static final char BACK_TICK = '`';
 
   /**
-   * The like clause. Can be overridden to disable default escape character.
+   * The non-escaped like clause (to stop slash being escaped on some platforms).
+   * Used for the 'raw like' expression but not for startsWith, endsWith and contains expressions.
    */
-  protected String likeClause = "like ?";
+  protected String likeClauseRaw = "like ? escape''";
+
+  /**
+   * Escaped like clause for startsWith, endsWith and contains.
+   */
+  protected String likeClauseEscaped = "like ? escape'|'";
+
+  /**
+   * Escape character used for startsWith, endsWith and contains.
+   */
+  protected char likeEscapeChar = '|';
+
+  /**
+   * Characters escaped for startsWith, endsWith and contains.
+   */
+  protected char[] likeSpecialCharacters = { '%', '_', '|' };
 
   protected DbEncrypt dbEncrypt;
 
@@ -157,8 +182,6 @@ public class DatabasePlatform {
    */
   protected PersistBatch persistBatchOnCascade = PersistBatch.ALL;
 
-  protected PlatformDdl platformDdl;
-
   /**
    * The maximum length of table names - used specifically when derived
    * default table names for intersection tables.
@@ -174,8 +197,6 @@ public class DatabasePlatform {
   protected boolean supportsNativeIlike;
 
   protected SqlExceptionTranslator exceptionTranslator = new SqlCodeTranslator();
-  
-  protected char[] specialLikeCharacters = { '%', '_' };
 
   /**
    * Instantiates a new database platform.
@@ -190,10 +211,20 @@ public class DatabasePlatform {
     return exceptionTranslator.translate(message, e);
   }
 
+  /**
+   * Configure the platform given the server configuration.
+   */
+  public void configure(PlatformConfig config) {
+    this.sequenceBatchSize = config.getDatabaseSequenceBatchSize();
+    configureIdType(config.getIdType());
+    configure(config, config.isAllQuotedIdentifiers());
+  }
+
   /**
    * Configure UUID Storage etc based on ServerConfig settings.
    */
-  public void configure(DbTypeConfig config) {
+  protected void configure(PlatformConfig config, boolean allQuotedIdentifiers) {
+    this.allQuotedIdentifiers = allQuotedIdentifiers;
     addGeoTypes(config.getGeometrySRID());
     configureIdType(config.getIdType());
     dbTypeMap.config(nativeUuidType, config.getDbUuid());
@@ -226,7 +257,7 @@ public class DatabasePlatform {
    * Return true if this matches the given platform.
    */
   public boolean isPlatform(Platform platform) {
-    return this.platform.equals(platform);
+    return this.platform == platform;
   }
 
   /**
@@ -246,6 +277,20 @@ public class DatabasePlatform {
     return platform.name().toLowerCase();
   }
 
+  /**
+   * Return true if we are using Sequence batch mode rather than STEP.
+   */
+  public boolean isSequenceBatchMode() {
+    return sequenceBatchMode;
+  }
+
+  /**
+   * Set to false to not use sequence batch mode but instead STEP mode.
+   */
+  public void setSequenceBatchMode(boolean sequenceBatchMode) {
+    this.sequenceBatchMode = sequenceBatchMode;
+  }
+
   /**
    * Return true if this database platform supports native ILIKE expression.
    */
@@ -270,20 +315,6 @@ public class DatabasePlatform {
     return maxConstraintNameLength;
   }
 
-  /**
-   * Return the platform specific DDL.
-   */
-  public PlatformDdl getPlatformDdl() {
-    return platformDdl;
-  }
-
-  /**
-   * Create and return a DDL handler for generating DDL scripts.
-   */
-  public DdlHandler createDdlHandler(ServerConfig serverConfig) {
-    return platformDdl.createDdlHandler(serverConfig);
-  }
-
   /**
    * Return true if the JDBC driver does not allow additional queries to execute
    * when a resultSet is being 'streamed' as is the case with findEach() etc.
@@ -301,10 +332,10 @@ public class DatabasePlatform {
    * @param be        the BackgroundExecutor that can be used to load the sequence if
    *                  desired
    * @param ds        the DataSource
+   * @param stepSize  the sequence allocation size as defined by mapping (defaults to 50)
    * @param seqName   the name of the sequence
-   * @param batchSize the number of sequences that should be loaded
    */
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
     return null;
   }
 
@@ -350,6 +381,13 @@ public class DatabasePlatform {
     this.historySupport = historySupport;
   }
 
+  /**
+   * So no except for Postgres and CockroachDB.
+   */
+  public boolean isNativeArrayType() {
+    return false;
+  }
+
   /**
    * Return true if the DB supports native UUID.
    */
@@ -403,8 +441,6 @@ public class DatabasePlatform {
 
   /**
    * Return the close quote for quoted identifiers.
-   *
-   * @return the close quote
    */
   public String getCloseQuote() {
     return closeQuote;
@@ -412,17 +448,20 @@ public class DatabasePlatform {
 
   /**
    * Return the open quote for quoted identifiers.
-   *
-   * @return the open quote
    */
   public String getOpenQuote() {
     return openQuote;
   }
 
+  /**
+   * Return the DB concat operator.
+   */
+  public String getConcatOperator() {
+    return concatOperator;
+  }
+
   /**
    * Return the JDBC type used to store booleans.
-   *
-   * @return the boolean db type
    */
   public int getBooleanDbType() {
     return booleanDbType;
@@ -485,6 +524,13 @@ public class DatabasePlatform {
     this.forwardOnlyHintOnFindIterate = forwardOnlyHintOnFindIterate;
   }
 
+  /**
+   * Normally not needed - overridden in CockroachPlatform.
+   */
+  public boolean isDdlCommitOnCreateIndex() {
+    return false;
+  }
+
   /**
    * Return the DB identity/sequence features for this platform.
    *
@@ -535,24 +581,33 @@ public class DatabasePlatform {
    * naming rules.
    * </p>
    *
-   * @param dbName the db name
-   * @return the string
+   * @param dbName the db table or column name
+   * @return the db table or column name with potentially platform specific quoted identifiers
    */
   public String convertQuotedIdentifiers(String dbName) {
     // Ignore null values e.g. schema name or catalog
     if (dbName != null && !dbName.isEmpty()) {
       if (dbName.charAt(0) == BACK_TICK) {
         if (dbName.charAt(dbName.length() - 1) == BACK_TICK) {
-
-          String quotedName = getOpenQuote();
-          quotedName += dbName.substring(1, dbName.length() - 1);
-          quotedName += getCloseQuote();
-
-          return quotedName;
-
+          return openQuote + dbName.substring(1, dbName.length() - 1) + closeQuote;
         } else {
           logger.error("Missing backquote on [" + dbName + "]");
         }
+      } else if (allQuotedIdentifiers) {
+        return openQuote + dbName + closeQuote;
+      }
+    }
+    return dbName;
+  }
+
+  /**
+   * Remove quoted identifier quotes from the table or column name if present.
+   */
+  public String unQuote(String dbName) {
+    if (dbName != null && !dbName.isEmpty()) {
+      if (dbName.startsWith(openQuote)) {
+        // trim off the open and close quotes
+        return dbName.substring(1, dbName.length()-1);
       }
     }
     return dbName;
@@ -573,6 +628,14 @@ public class DatabasePlatform {
     return sql;
   }
 
+  /**
+   * For update hint on the FROM clause (SQL server only).
+   */
+  public String fromForUpdate(Query.ForUpdate forUpdateMode) {
+    // return null except for sql server
+    return null;
+  }
+
   protected String withForUpdate(String sql, Query.ForUpdate forUpdateMode) {
     // silently assume the database does not support the "for update" clause.
     logger.info("it seems your database does not support the 'for update' clause");
@@ -584,8 +647,8 @@ public class DatabasePlatform {
    * <p>
    * This may include an escape clause to disable a default escape character.
    */
-  public String getLikeClause() {
-    return likeClause;
+  public String getLikeClause(boolean rawLikeExpression) {
+    return rawLikeExpression ? likeClauseRaw : likeClauseEscaped;
   }
 
   /**
@@ -605,18 +668,7 @@ public class DatabasePlatform {
     try {
       return tables.next();
     } finally {
-      close(tables);
-    }
-  }
-
-  /**
-   * Close the resultSet.
-   */
-  protected void close(ResultSet resultSet) {
-    try {
-      resultSet.close();
-    } catch (SQLException e) {
-      logger.error("Error closing resultSet", e);
+      JdbcClose.close(tables);
     }
   }
 
@@ -628,7 +680,7 @@ public class DatabasePlatform {
     for (int i = 0; i < value.length(); i++) {
       char ch = value.charAt(i);
       boolean escaped = false;
-      for (char escapeChar: specialLikeCharacters) {
+      for (char escapeChar: likeSpecialCharacters) {
         if (ch == escapeChar) {
           if (sb == null) {
             sb = new StringBuilder(value.substring(0, i));
@@ -648,8 +700,8 @@ public class DatabasePlatform {
       return sb.toString();
     }
   }
-  
+
   protected void escapeLikeCharacter(char ch, StringBuilder sb) {
-    sb.append('\\').append(ch);
+    sb.append(likeEscapeChar).append(ch);
   }
 }

src/main/java/io/ebean/config/dbplatform/DbDefaultValue.java

@@ -1,8 +1,13 @@
 package io.ebean.config.dbplatform;
 
+import java.sql.Types;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
+import javax.xml.bind.DatatypeConverter;
+
+import io.ebean.annotation.DbDefault;
+
 /**
  * DB Column default values mapping to database platform specific literals.
  */
@@ -22,6 +27,13 @@ public class DbDefaultValue {
    * The key for the NOW / current timestamp.
    */
   public static final String NOW = "now";
+  
+  /**
+   * The 'null' literal.
+   */
+  public static final String NULL = "null";
+  
+
 
   protected Map<String, String> map = new LinkedHashMap<>();
 
@@ -63,8 +75,128 @@ public class DbDefaultValue {
     if (dbDefaultLiteral == null) {
       return null;
     }
+    if (dbDefaultLiteral.startsWith("$RAW:")) {
+      return dbDefaultLiteral.substring(5);
+    }
     String val = map.get(dbDefaultLiteral);
     return val != null ? val : dbDefaultLiteral;
   }
 
+  
+  /**
+   * This method checks & convert the {@link DbDefault#value()} to a valid SQL literal.
+   * 
+   * This is mainly to quote string literals and verify integer/dates for correctness.
+   * <p>
+   * Note: There are some special cases:
+   * </p>
+   * <ul>
+   *    <li>Normal Quoting: <code>@DbDefault("User's default")</code> on a String propery
+   *        returns: <code>default 'User''s default'</code><br/>
+   *        (the same on an integer property will throw a NumberFormatException)</li>
+   *    <li>Special case null: <code>@DbDefault("null")</code> will return this: <code>default null</code><br/>
+   *        If you need really the String "null", you have to specify <code>@DbDefault("'null'")</code>
+   *        which gives you the <code>default 'null'</code> statement.</li>
+   *    <li>Any statement, that begins and ends with single quote will not be checked or get quoted again.</li>
+   *    <li>A statement that begins with "$RAW:", e.g <code>@DbDefault("$RAW:N'SANDNES'")</code> will lead to 
+   *        a <code>default N'SANDNES'</code> in DDL. Note that this is platform specific!</li>
+   * </ul>
+   */
+  public static String toSqlLiteral(String defaultValue, Class<?> propertyType, int sqlType) {
+    if (propertyType == null
+        || defaultValue == null 
+        || NULL.equals(defaultValue)
+        || (defaultValue.startsWith("'") && defaultValue.endsWith("'"))
+        || (defaultValue.startsWith("$RAW:"))) {  
+      return defaultValue;
+    }
+
+    if (Boolean.class.isAssignableFrom(propertyType) || Boolean.TYPE.isAssignableFrom(propertyType)) {
+      return toBooleanLiteral(defaultValue);
+    }
+    
+    if (Number.class.isAssignableFrom(propertyType) 
+        || Byte.TYPE.equals(propertyType)
+        || Short.TYPE.equals(propertyType)
+        || Integer.TYPE.equals(propertyType)
+        || Long.TYPE.equals(propertyType)
+        || Float.TYPE.equals(propertyType)
+        || Double.TYPE.equals(propertyType)
+        || (propertyType.isEnum() && sqlType == Types.INTEGER)) {
+      Double.valueOf(defaultValue); // verify if it is a number
+      return defaultValue;
+    }
+   
+    // check if it is a date/time - in all other cases return quoted defaultValue
+    switch (sqlType) {
+      // date
+      case Types.DATE:
+        return toDateLiteral(defaultValue);
+      // time
+      case Types.TIME:
+      case Types.TIME_WITH_TIMEZONE:
+        return toTimeLiteral(defaultValue);
+      // timestamp
+      case Types.TIMESTAMP:
+      case Types.TIMESTAMP_WITH_TIMEZONE:
+        return toDateTimeLiteral(defaultValue);
+
+      default:
+        return toTextLiteral(defaultValue); // do not check other datatypes
+    }
+  }
+
+  /**
+   * Checks if specified value is either 'true' or 'false'. The literal is translated later.
+   */
+  private static String toBooleanLiteral(String value) {
+    if (DbDefaultValue.FALSE.equals(value) || DbDefaultValue.TRUE.equals(value)) {
+      return value;
+    }
+    throw new IllegalArgumentException("'" + value + "' is not a valid value for boolean");
+  }
+  
+  /**
+   * This adds single qoutes around the <code>value</code> and doubles single quotes.
+   * "User's home" will return "'User''s home'"
+   */
+  private static String toTextLiteral(String value) {
+    StringBuilder sb = new StringBuilder(value.length()+10);
+    sb.append('\'');
+    for (int i = 0; i < value.length(); i++) {
+      char ch = value.charAt(i);
+      if (ch == '\'') {
+        sb.append("''");
+      } else {
+        sb.append(ch);
+      }
+    }
+    sb.append('\'');
+    return sb.toString();
+
+  }
+  
+  private static String toDateLiteral(String value) {
+    if (NOW.equals(value)) {
+      return value; // this will get translated later
+    }
+    DatatypeConverter.parseDate(value); // verify
+    return toTextLiteral(value);
+  }
+
+  private static String toTimeLiteral(String value) {
+    if (NOW.equals(value)) {
+      return value; // this will get translated later
+    }
+    DatatypeConverter.parseTime(value); // verify
+    return toTextLiteral(value);
+  }
+  
+  private static String toDateTimeLiteral(String value) {
+    if (NOW.equals(value)) {
+      return value; // this will get translated later
+    }
+    DatatypeConverter.parseDateTime(value); // verify
+    return toTextLiteral(value);
+  }
 }

src/main/java/io/ebean/config/dbplatform/DbIdentity.java

@@ -1,12 +1,15 @@
 package io.ebean.config.dbplatform;
 
-import io.ebean.dbmigration.migration.IdentityType;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Defines the identity/sequence behaviour for the database.
  */
 public class DbIdentity {
 
+  private static final Pattern TABLE_REPLACE = Pattern.compile("{table}", Pattern.LITERAL);
+
   /**
    * Set if this DB supports sequences. Note some DB's support both Sequences
    * and Identity.
@@ -50,7 +53,8 @@ public class DbIdentity {
     if (selectLastInsertedIdTemplate == null) {
       return null;
     }
-    return selectLastInsertedIdTemplate.replace("{table}", table);
+
+    return TABLE_REPLACE.matcher(selectLastInsertedIdTemplate).replaceAll(Matcher.quoteReplacement(table));
   }
 
   /**
@@ -116,28 +120,4 @@ public class DbIdentity {
     this.idType = idType;
   }
 
-  /**
-   * Determine the id type to use based on requested identityType and
-   * the support for that in the database platform.
-   */
-  public IdType useIdentityType(IdentityType identityType) {
-
-    if (identityType == null) {
-      // use the default
-      return idType;
-    }
-    switch (identityType) {
-      case GENERATOR:
-        return IdType.GENERATOR;
-      case EXTERNAL:
-        return IdType.EXTERNAL;
-      case SEQUENCE:
-        return supportsSequence ? IdType.SEQUENCE : idType;
-      case IDENTITY:
-        return supportsIdentity ? IdType.IDENTITY : idType;
-      default:
-        return idType;
-    }
-
-  }
 }

src/main/java/io/ebean/config/dbplatform/DbPlatformType.java

@@ -126,25 +126,33 @@ public class DbPlatformType implements ExtraDbTypes {
 
     StringBuilder sb = new StringBuilder();
     sb.append(name);
-
     if (canHaveLength || !strict) {
-      // see if there is a precision/scale to add (or not)
-      int len = deployLength != 0 ? deployLength : defaultLength;
-      if (len > 0) {
-        sb.append("(");
-        sb.append(len);
-        int scale = deployScale != 0 ? deployScale : defaultScale;
-        if (scale > 0) {
-          sb.append(",");
-          sb.append(scale);
-        }
-        sb.append(")");
-      }
+      renderLengthScale(deployLength, deployScale, sb);
     }
 
     return sb.toString();
   }
 
+  /**
+   * Render the length and scale part of the column definition.
+   */
+  protected void renderLengthScale(int deployLength, int deployScale, StringBuilder sb) {
+    // see if there is a precision/scale to add (or not)
+    int len = deployLength != 0 ? deployLength : defaultLength;
+    if (len == Integer.MAX_VALUE) {
+      sb.append("(max)"); // TODO: this is sqlserver specific
+    } else if (len > 0) {
+      sb.append("(");
+      sb.append(len);
+      int scale = deployScale != 0 ? deployScale : defaultScale;
+      if (scale > 0) {
+        sb.append(",");
+        sb.append(scale);
+      }
+      sb.append(")");
+    }
+  }
+
   /**
    * Create a copy of the type with a new default length.
    */

src/main/java/io/ebean/config/dbplatform/DbPlatformTypeMapping.java

@@ -1,6 +1,6 @@
 package io.ebean.config.dbplatform;
 
-import io.ebean.config.ServerConfig;
+import io.ebean.config.PlatformConfig;
 
 import java.util.EnumMap;
 import java.util.Map;
@@ -10,8 +10,23 @@ import java.util.Map;
  */
 public class DbPlatformTypeMapping {
 
+  /**
+   * Boolean type used for logical model.
+   */
+  private static class BooleanLogicalType extends DbPlatformType {
+    BooleanLogicalType() {
+      super("boolean", false);
+    }
+    @Override
+    protected void renderLengthScale(int deployLength, int deployScale, StringBuilder sb) {
+      // do not have length - even if platform boolean type does like integer(1)
+    }
+  }
+
   private static DbPlatformTypeLookup lookup = new DbPlatformTypeLookup();
 
+  private static final DbPlatformType BOOLEAN_LOGICAL = new BooleanLogicalType();
+
   private static final DbPlatformType UUID_NATIVE = new DbPlatformType("uuid", false);
   @SuppressWarnings("unused")
   private static final DbPlatformType UUID_PLACEHOLDER = new DbPlatformType("uuidPlaceholder");
@@ -51,7 +66,7 @@ public class DbPlatformTypeMapping {
    */
   private void loadDefaults(boolean logicalTypes) {
 
-    put(DbType.BOOLEAN);
+    put(DbType.BOOLEAN, BOOLEAN_LOGICAL);
     put(DbType.BIT);
     put(DbType.INTEGER);
     put(DbType.BIGINT);
@@ -104,8 +119,8 @@ public class DbPlatformTypeMapping {
       put(DbType.JSONCLOB, JSON_CLOB_PLACEHOLDER);
       put(DbType.JSONBLOB, JSON_BLOB_PLACEHOLDER);
       put(DbType.JSONVARCHAR, JSON_VARCHAR_PLACEHOLDER);
-      // use reasonable default of varchar(40) - ideally set via DatabasePlatform.configure(DbTypeConfig)
-      put(DbType.UUID, get(DbType.VARCHAR).withLength(40));
+      // default to native UUID and override on platform configure()
+      put(DbType.UUID, UUID_NATIVE);
     }
   }
 
@@ -183,9 +198,9 @@ public class DbPlatformTypeMapping {
   /**
    * Map the UUID appropriately based on native DB support and ServerConfig.DbUuid.
    */
-  public void config(boolean nativeUuidType, ServerConfig.DbUuid dbUuid) {
+  public void config(boolean nativeUuidType, PlatformConfig.DbUuid dbUuid) {
     if (nativeUuidType && dbUuid.useNativeType()) {
-      put(DbType.UUID, UUID_NATIVE);
+      // native UUID already set by default
     } else if (dbUuid.useBinary()) {
       put(DbType.UUID, get(DbType.BINARY).withLength(16));
     } else {

src/main/java/io/ebean/config/dbplatform/DbPlatformTypeParser.java

@@ -30,7 +30,8 @@ class DbPlatformTypeParser {
 
       } else {
         String type = columnDefinition.substring(0, openPos);
-        int scale = Integer.parseInt(columnDefinition.substring(openPos + 1, closePos));
+        String strScale = columnDefinition.substring(openPos + 1, closePos);
+        int scale = strScale.equalsIgnoreCase("max") ? Integer.MAX_VALUE : Integer.parseInt(strScale);
         return new DbPlatformType(type, scale);
       }
     } catch (RuntimeException e) {

src/main/java/io/ebean/config/dbplatform/SequenceBatchIdGenerator.java

@@ -0,0 +1,57 @@
+package io.ebean.config.dbplatform;
+
+import io.ebean.BackgroundExecutor;
+
+import javax.sql.DataSource;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Database sequence based IdGenerator using Sequence Step 1 but batch fetch many sequence values.
+ */
+public abstract class SequenceBatchIdGenerator extends SequenceIdGenerator {
+
+  /**
+   * Construct where batchSize is the sequence step size.
+   *
+   */
+  public SequenceBatchIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
+    super(be, ds, seqName, batchSize);
+  }
+
+  /**
+   * If allocateSize is large load some sequences in a background thread.
+   * <p>
+   * For example, when inserting a bean with a cascade on a OneToMany with many
+   * beans Ebean can call this to ensure .
+   * </p>
+   */
+  @Override
+  public void preAllocateIds(int requestSize) {
+    if (allocationSize > 1 && requestSize > allocationSize) {
+      // only bother if allocateSize is bigger than
+      // the normal loading batchSize
+      if (requestSize > 100) {
+        // max out at 100 for now
+        requestSize = 100;
+      }
+      loadInBackground(requestSize);
+    }
+  }
+
+  /**
+   * Add the next set of Ids as the next value plus all the following numbers up to the step size.
+   */
+  @Override
+  protected List<Long> readIds(ResultSet resultSet, int loadSize) throws SQLException {
+
+    List<Long> newIds = new ArrayList<>(loadSize);
+    while (resultSet.next()) {
+      newIds.add(resultSet.getLong(1));
+    }
+    return newIds;
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/SequenceIdGenerator.java

@@ -2,6 +2,7 @@ package io.ebean.config.dbplatform;
 
 import io.ebean.BackgroundExecutor;
 import io.ebean.Transaction;
+import io.ebean.util.JdbcClose;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -12,13 +13,15 @@ import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 
 /**
  * Database sequence based IdGenerator.
  */
 public abstract class SequenceIdGenerator implements PlatformIdGenerator {
 
-  private static final Logger logger = LoggerFactory.getLogger(SequenceIdGenerator.class);
+  protected static final Logger logger = LoggerFactory.getLogger("io.ebean.SEQ");
 
   /**
    * Used to synchronise the idList access.
@@ -41,18 +44,18 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
 
   protected final ArrayList<Long> idList = new ArrayList<>(50);
 
-  protected final int batchSize;
+  protected final int allocationSize;
 
-  protected int currentlyBackgroundLoading;
+  protected boolean currentlyBackgroundLoading;
 
   /**
    * Construct given a dataSource and sql to return the next sequence value.
    */
-  public SequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
+  protected SequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int allocationSize) {
     this.backgroundExecutor = be;
     this.dataSource = ds;
     this.seqName = seqName;
-    this.batchSize = batchSize;
+    this.allocationSize = allocationSize;
   }
 
   public abstract String getSql(int batchSize);
@@ -81,26 +84,8 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
    * </p>
    */
   @Override
-  public void preAllocateIds(int allocateSize) {
-    if (batchSize > 1 && allocateSize > batchSize) {
-      // only bother if allocateSize is bigger than
-      // the normal loading batchSize
-      if (allocateSize > 100) {
-        // max out at 100 for now
-        allocateSize = 100;
-      }
-      loadLargeAllocation(allocateSize);
-    }
-  }
-
-  /**
-   * Called by preAllocateIds when we know that a large number of Id's is going
-   * to be needed shortly.
-   */
-  protected void loadLargeAllocation(final int allocateSize) {
-    // preAllocateIds was called with a relatively large batchSize
-    // so we will just go ahead and load those anyway in background
-    backgroundExecutor.execute(() -> loadMoreIds(allocateSize, null));
+  public void preAllocateIds(int requestSize) {
+    // do nothing by default
   }
 
   /**
@@ -113,80 +98,80 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
   public Object nextId(Transaction t) {
     synchronized (monitor) {
 
-      if (idList.isEmpty()) {
-        loadMoreIds(batchSize, t);
-      }
-      Long nextId = idList.remove(0);
-
-      if (batchSize > 1) {
-        if (idList.size() <= batchSize / 2) {
-          loadBatchInBackground();
-        }
+      int size = idList.size();
+      if (size > 0) {
+        maybeLoadMoreInBackground(size);
+      } else {
+        loadMore(allocationSize);
       }
 
-      return nextId;
+      return idList.remove(0);
     }
   }
 
-  /**
-   * Load another batch of Id's using a background thread.
-   */
-  protected void loadBatchInBackground() {
-
-    // single threaded processing...
-    synchronized (backgroundLoadMonitor) {
-
-      if (currentlyBackgroundLoading > 0) {
-        // skip as already background loading
-        logger.debug("... skip background sequence load (another load in progress)");
-        return;
+  private void maybeLoadMoreInBackground(int currentSize) {
+    if (allocationSize > 1) {
+      if (currentSize <= allocationSize / 2) {
+        loadInBackground(allocationSize);
       }
-
-      currentlyBackgroundLoading = batchSize;
-
-      backgroundExecutor.execute(() -> {
-        loadMoreIds(batchSize, null);
-        synchronized (backgroundLoadMonitor) {
-          currentlyBackgroundLoading = 0;
-        }
-      });
     }
   }
 
-  protected void loadMoreIds(final int numberToLoad, Transaction t) {
-
-    ArrayList<Long> newIds = getMoreIds(numberToLoad, t);
-
-    if (logger.isDebugEnabled()) {
-      logger.debug("... seq:" + seqName + " loaded:" + numberToLoad + " ids:" + newIds);
-    }
-
+  private void loadMore(int requestSize) {
+    List<Long> newIds = getMoreIds(requestSize);
     synchronized (monitor) {
       idList.addAll(newIds);
     }
   }
 
+  /**
+   * Load another batch of Id's using a background thread.
+   */
+  protected void loadInBackground(final int requestSize) {
+
+    // single threaded processing...
+    synchronized (backgroundLoadMonitor) {
+      if (currentlyBackgroundLoading) {
+        // skip as already background loading
+        logger.debug("... skip background sequence load (another load in progress)");
+        return;
+      }
+
+      currentlyBackgroundLoading = true;
+
+      backgroundExecutor.execute(() -> {
+        loadMore(requestSize);
+        synchronized (backgroundLoadMonitor) {
+          currentlyBackgroundLoading = false;
+        }
+      });
+    }
+  }
+
+  /**
+   * Read the resultSet returning the list of Id values.
+   */
+  protected abstract List<Long> readIds(ResultSet resultSet, int loadSize) throws SQLException;
+
   /**
    * Get more Id's by executing a query and reading the Id's returned.
    */
-  protected ArrayList<Long> getMoreIds(int loadSize, Transaction t) {
+  protected List<Long> getMoreIds(int requestSize) {
 
-    String sql = getSql(loadSize);
+    String sql = getSql(requestSize);
 
-    ArrayList<Long> newIds = new ArrayList<>(loadSize);
-
-    boolean useTxnConnection = t != null;
-
-    Connection c = null;
-    PreparedStatement pstmt = null;
-    ResultSet rset = null;
+    Connection connection = null;
+    PreparedStatement statement = null;
+    ResultSet resultSet = null;
     try {
-      c = useTxnConnection ? t.getConnection() : dataSource.getConnection();
+      connection = dataSource.getConnection();
 
-      pstmt = c.prepareStatement(sql);
-      rset = pstmt.executeQuery();
-      while (rset.next()) {
-        newIds.add(rset.getLong(1));
+      statement = connection.prepareStatement(sql);
+      resultSet = statement.executeQuery();
+
+      List<Long> newIds = readIds(resultSet, requestSize);
+      if (logger.isTraceEnabled()) {
+        logger.trace("seq:{} loaded:{} sql:{}", seqName, newIds.size(), sql);
       }
       if (newIds.isEmpty()) {
         throw new PersistenceException("Always expecting more than 1 row from " + sql);
@@ -197,46 +182,24 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
     } catch (SQLException e) {
       if (e.getMessage().contains("Database is already closed")) {
         String msg = "Error getting SEQ when DB shutting down " + e.getMessage();
-        logger.info(msg);
+        logger.error(msg);
         System.out.println(msg);
-        return newIds;
+        return Collections.emptyList();
       } else {
         throw new PersistenceException("Error getting sequence nextval", e);
       }
     } finally {
-      if (useTxnConnection) {
-        closeResources(null, pstmt, rset);
-      } else {
-        closeResources(c, pstmt, rset);
-      }
+      closeResources(connection, statement, resultSet);
     }
   }
 
   /**
    * Close the JDBC resources.
    */
-  protected void closeResources(Connection c, PreparedStatement pstmt, ResultSet rset) {
-    try {
-      if (rset != null) {
-        rset.close();
-      }
-    } catch (SQLException e) {
-      logger.error("Error closing ResultSet", e);
-    }
-    try {
-      if (pstmt != null) {
-        pstmt.close();
-      }
-    } catch (SQLException e) {
-      logger.error("Error closing PreparedStatement", e);
-    }
-    try {
-      if (c != null) {
-        c.close();
-      }
-    } catch (SQLException e) {
-      logger.error("Error closing Connection", e);
-    }
+  private void closeResources(Connection connection, PreparedStatement statement, ResultSet resultSet) {
+    JdbcClose.close(resultSet);
+    JdbcClose.close(statement);
+    JdbcClose.close(connection);
   }
 
 }

src/main/java/io/ebean/config/dbplatform/SequenceStepIdGenerator.java

@@ -0,0 +1,39 @@
+package io.ebean.config.dbplatform;
+
+import io.ebean.BackgroundExecutor;
+
+import javax.sql.DataSource;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Database sequence based IdGenerator using Sequence Step (e.g. step 50).
+ */
+public abstract class SequenceStepIdGenerator extends SequenceIdGenerator {
+
+  /**
+   * Construct with stepSize (typically 50).
+   */
+  protected SequenceStepIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
+    super(be, ds, seqName, stepSize);
+  }
+
+  /**
+   * Add the next set of Ids as the next value plus all the following numbers up to the step size.
+   */
+  @Override
+  protected List<Long> readIds(ResultSet resultSet, int ignoreRequestSize) throws SQLException {
+
+    List<Long> newIds = new ArrayList<>(allocationSize);
+    if (resultSet.next()) {
+      long start = resultSet.getLong(1);
+      for (int i = 0; i < allocationSize; i++) {
+        newIds.add(start + i);
+      }
+    }
+    return newIds;
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/SimpleSequenceIdGenerator.java

@@ -1,6 +1,7 @@
 package io.ebean.config.dbplatform;
 
 import io.ebean.Transaction;
+import io.ebean.util.JdbcClose;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -82,27 +83,9 @@ public class SimpleSequenceIdGenerator implements PlatformIdGenerator {
   }
 
   private void closeResources(ResultSet rset, PreparedStatement pstmt, Connection c) {
-    try {
-      if (rset != null) {
-        rset.close();
-      }
-    } catch (SQLException e) {
-      logger.error("Error closing ResultSet", e);
-    }
-    try {
-      if (pstmt != null) {
-        pstmt.close();
-      }
-    } catch (SQLException e) {
-      logger.error("Error closing PreparedStatement", e);
-    }
-    try {
-      if (c != null) {
-        c.close();
-      }
-    } catch (SQLException e) {
-      logger.error("Error closing Connection", e);
-    }
+    JdbcClose.close(rset);
+    JdbcClose.close(pstmt);
+    JdbcClose.close(c);
   }
 
 }

src/main/java/io/ebean/config/dbplatform/SqlCodeTranslator.java

@@ -34,6 +34,10 @@ public class SqlCodeTranslator implements SqlExceptionTranslator {
   public PersistenceException translate(String message, SQLException e) {
 
     DataErrorType errorType = map.get(e.getSQLState());
+    if (errorType == null) {
+      // fall back to error code
+      errorType = map.get(String.valueOf(e.getErrorCode()));
+    }
     if (errorType != null) {
       switch (errorType) {
         case AcquireLock:

src/main/java/io/ebean/config/dbplatform/cockroach/CockroachPlatform.java

@@ -0,0 +1,28 @@
+package io.ebean.config.dbplatform.cockroach;
+
+import io.ebean.annotation.Platform;
+import io.ebean.config.dbplatform.postgres.PostgresPlatform;
+
+/**
+ * CockroachDB based platform.
+ */
+public class CockroachPlatform extends PostgresPlatform {
+
+  public CockroachPlatform() {
+    super();
+    this.platform = Platform.COCKROACH;
+    // no like escape clause supported
+    this.likeSpecialCharacters = new char[]{'%', '_'};
+    this.likeClauseRaw = "like ?";
+    this.likeClauseEscaped = "like ?";
+  }
+
+  /**
+   * Needs a commit after create index such that alter table add foreign key ... succeeds.
+   */
+  @Override
+  public boolean isDdlCommitOnCreateIndex() {
+    return true;
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/db2/DB2Platform.java

@@ -1,13 +1,13 @@
 package io.ebean.config.dbplatform.db2;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.Platform;
+import io.ebean.annotation.PersistBatch;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.PlatformIdGenerator;
 import io.ebean.config.dbplatform.SqlErrorCodes;
-import io.ebean.dbmigration.ddlgeneration.platform.DB2Ddl;
 
 import javax.sql.DataSource;
 import java.sql.Types;
@@ -23,22 +23,27 @@ public class DB2Platform extends DatabasePlatform {
     this.maxTableNameLength = 18;
     this.maxConstraintNameLength = 18;
     this.sqlLimiter = new Db2SqlLimiter();
-    this.platformDdl = new DB2Ddl(this);
 
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsSequence(true);
 
     this.exceptionTranslator =
       new SqlErrorCodes()
-        //.addAcquireLock("")
-        .addDuplicateKey("-803")
-        .addDataIntegrity("-407","-530","-531","-532","-543","-544","-545","-603","-667")
+        .addAcquireLock("40001","57033") // key -911/-913
+        .addDuplicateKey("23505") // -803
+        // .addDataIntegrity("-407","-530","-531","-532","-543","-544","-545","-603","-667")
+        // we need SQLState, not code: https://www.ibm.com/support/knowledgecenter/en/SSEPEK_10.0.0/codes/src/tpc/db2z_n.html
+        .addDataIntegrity("23502","23503","23504","23511","23512","23511","42917","23515")
         .build();
 
     booleanDbType = Types.BOOLEAN;
+    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("smallint", false));
+    dbTypeMap.put(DbType.INTEGER, new DbPlatformType("integer", false));
+    dbTypeMap.put(DbType.BIGINT, new DbPlatformType("bigint", false));
     dbTypeMap.put(DbType.REAL, new DbPlatformType("real"));
-    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("smallint"));
     dbTypeMap.put(DbType.DECIMAL, new DbPlatformType("decimal", 15));
+
+    persistBatchOnCascade = PersistBatch.NONE;
   }
 
   /**
@@ -46,10 +51,9 @@ public class DB2Platform extends DatabasePlatform {
    * sequence values.
    */
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be,
-                                                       DataSource ds, String seqName, int batchSize) {
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
 
-    return new DB2SequenceIdGenerator(be, ds, seqName, batchSize);
+    return new DB2SequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
   }
 
 }

src/main/java/io/ebean/config/dbplatform/db2/DB2SequenceIdGenerator.java

@@ -1,14 +1,14 @@
 package io.ebean.config.dbplatform.db2;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceIdGenerator;
+import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
 
 import javax.sql.DataSource;
 
 /**
  * DB2 specific sequence Id Generator.
  */
-public class DB2SequenceIdGenerator extends SequenceIdGenerator {
+public class DB2SequenceIdGenerator extends SequenceBatchIdGenerator {
 
   private final String baseSql;
   private final String unionBaseSql;

src/main/java/io/ebean/config/dbplatform/h2/H2HistoryTrigger.java

@@ -49,7 +49,7 @@ public class H2HistoryTrigger implements Trigger {
 
     // build the insert into history table SQL
     StringBuilder insertSql = new StringBuilder(150);
-    insertSql.append("insert into ").append(tableName).append(HISTORY_SUFFIX).append(" (");
+    insertSql.append("insert into ").append(schemaName).append(".").append(tableName).append(HISTORY_SUFFIX).append(" (");
 
     int count = 0;
     while (rs.next()) {

src/main/java/io/ebean/config/dbplatform/h2/H2Platform.java

@@ -1,15 +1,14 @@
 package io.ebean.config.dbplatform.h2;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.Platform;
 import io.ebean.Query;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.IdType;
 import io.ebean.config.dbplatform.PlatformIdGenerator;
 import io.ebean.config.dbplatform.SqlErrorCodes;
-import io.ebean.dbmigration.ddlgeneration.platform.H2Ddl;
 
 import javax.sql.DataSource;
 
@@ -22,7 +21,6 @@ public class H2Platform extends DatabasePlatform {
     super();
     this.platform = Platform.H2;
     this.dbEncrypt = new H2DbEncrypt();
-    this.platformDdl = new H2Ddl(this);
     this.historySupport = new H2HistorySupport();
     this.nativeUuidType = true;
     this.dbDefaultValue.setNow("now()");
@@ -30,7 +28,7 @@ public class H2Platform extends DatabasePlatform {
 
     this.exceptionTranslator =
       new SqlErrorCodes()
-        .addAcquireLock("50200")
+        .addAcquireLock("50200","HYT00")
         .addDuplicateKey("23001","23505")
         .addDataIntegrity("22001","22003","22012","22018","22025","23000","23002","23003","23502","23503","23506","23507","23513")
         .build();
@@ -48,10 +46,8 @@ public class H2Platform extends DatabasePlatform {
    * sequence values.
    */
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds,
-                                                       String seqName, int batchSize) {
-
-    return new H2SequenceIdGenerator(be, ds, seqName, batchSize);
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
+    return new H2SequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
   }
 
   @Override

src/main/java/io/ebean/config/dbplatform/h2/H2SequenceIdGenerator.java

@@ -1,14 +1,14 @@
 package io.ebean.config.dbplatform.h2;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceIdGenerator;
+import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
 
 import javax.sql.DataSource;
 
 /**
  * H2 specific sequence Id Generator.
  */
-public class H2SequenceIdGenerator extends SequenceIdGenerator {
+public class H2SequenceIdGenerator extends SequenceBatchIdGenerator {
 
   private final String baseSql;
   private final String unionBaseSql;

src/main/java/io/ebean/config/dbplatform/hsqldb/HsqldbPlatform.java

@@ -1,7 +1,7 @@
 package io.ebean.config.dbplatform.hsqldb;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.Platform;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
@@ -9,7 +9,6 @@ import io.ebean.config.dbplatform.IdType;
 import io.ebean.config.dbplatform.PlatformIdGenerator;
 import io.ebean.config.dbplatform.h2.H2DbEncrypt;
 import io.ebean.config.dbplatform.h2.H2SequenceIdGenerator;
-import io.ebean.dbmigration.ddlgeneration.platform.HsqldbDdl;
 
 import javax.sql.DataSource;
 
@@ -22,7 +21,6 @@ public class HsqldbPlatform extends DatabasePlatform {
     super();
     this.platform = Platform.HSQLDB;
     this.dbEncrypt = new H2DbEncrypt();
-    this.platformDdl = new HsqldbDdl(this);
 
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
@@ -33,9 +31,8 @@ public class HsqldbPlatform extends DatabasePlatform {
   }
 
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
-
-    return new H2SequenceIdGenerator(be, ds, seqName, batchSize);
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
+    return new H2SequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
   }
 
 }

src/main/java/io/ebean/config/dbplatform/mysql/MySqlPlatform.java

@@ -1,17 +1,13 @@
 package io.ebean.config.dbplatform.mysql;
 
-import io.ebean.BackgroundExecutor;
-import io.ebean.Platform;
 import io.ebean.Query;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.IdType;
-import io.ebean.config.dbplatform.PlatformIdGenerator;
 import io.ebean.config.dbplatform.SqlErrorCodes;
-import io.ebean.dbmigration.ddlgeneration.platform.MySqlDdl;
 
-import javax.sql.DataSource;
 import java.sql.Types;
 
 /**
@@ -32,7 +28,6 @@ public class MySqlPlatform extends DatabasePlatform {
     this.useExtraTransactionOnIterateSecondaryQueries = true;
     this.selectCountWithAlias = true;
     this.dbEncrypt = new MySqlDbEncrypt();
-    this.platformDdl = new MySqlDdl(this);
     this.historySupport = new MySqlHistorySupport();
     this.columnAliasPrefix = null;
 
@@ -40,22 +35,30 @@ public class MySqlPlatform extends DatabasePlatform {
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsIdentity(true);
     this.dbIdentity.setSupportsSequence(false);
+    
+    this.dbDefaultValue.setNow("now(6)"); // must have same precision as TIMESTAMP
+    this.dbDefaultValue.setFalse("0");
+    this.dbDefaultValue.setTrue("1");
+
 
     this.exceptionTranslator =
       new SqlErrorCodes()
         .addAcquireLock("1205")
-        .addDuplicateKey("1062")
-        .addDataIntegrity("630","839","840","893","1169","1215","1216","1217","1364","1451","1452","1557")
+        .addDuplicateKey("1062", "1169")
+        .addDataIntegrity("630", "839", "840", "893", "1215", "1216", "1217", "1364", "1451", "1452", "1557")
         .build();
 
     this.openQuote = "`";
     this.closeQuote = "`";
+    // use pipe for escaping as it depends if mysql runs in no_backslash_escapes or not.
+    this.likeClauseRaw = "like binary ? escape ''";
+    this.likeClauseEscaped = "like binary ? escape '|'";
 
     this.forwardOnlyHintOnFindIterate = true;
     this.booleanDbType = Types.BIT;
 
-    dbTypeMap.put(DbType.BIT, new DbPlatformType("tinyint(1) default 0"));
-    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("tinyint(1) default 0"));
+    dbTypeMap.put(DbType.BIT, new DbPlatformType("tinyint(1)"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("tinyint(1)"));
     dbTypeMap.put(DbType.TIMESTAMP, new DbPlatformType("datetime(6)"));
     dbTypeMap.put(DbType.CLOB, new MySqlClob());
     dbTypeMap.put(DbType.BLOB, new MySqlBlob());
@@ -63,19 +66,10 @@ public class MySqlPlatform extends DatabasePlatform {
     dbTypeMap.put(DbType.VARBINARY, new DbPlatformType("varbinary", 255));
   }
 
-  /**
-   * Return null in case there is a sequence annotation.
-   */
-  @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be,
-                                                       DataSource ds, String seqName, int batchSize) {
-
-    return null;
-  }
-
   @Override
   protected String withForUpdate(String sql, Query.ForUpdate forUpdateMode) {
     // NOWAIT and SKIP LOCKED currently not supported with MySQL
     return sql + " for update";
   }
+
 }

src/main/java/io/ebean/config/dbplatform/oracle/OraclePlatform.java

@@ -1,8 +1,8 @@
 package io.ebean.config.dbplatform.oracle;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.Platform;
 import io.ebean.Query;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.BasicSqlAnsiLimiter;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
@@ -10,13 +10,13 @@ import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.IdType;
 import io.ebean.config.dbplatform.PlatformIdGenerator;
 import io.ebean.config.dbplatform.RownumSqlLimiter;
-import io.ebean.dbmigration.ddlgeneration.platform.Oracle10Ddl;
+import io.ebean.config.dbplatform.SqlErrorCodes;
 
 import javax.sql.DataSource;
 import java.sql.Types;
 
 /**
- * Oracle10 and greater specific platform.
+ * Oracle specific platform.
  */
 public class OraclePlatform extends DatabasePlatform {
 
@@ -28,22 +28,32 @@ public class OraclePlatform extends DatabasePlatform {
     this.dbEncrypt = new OracleDbEncrypt();
     this.sqlLimiter = new RownumSqlLimiter();
     this.basicSqlLimiter = new BasicSqlAnsiLimiter();
-    this.platformDdl = new Oracle10Ddl(this);
     this.historySupport = new OracleDbHistorySupport();
 
-    // Not using getGeneratedKeys as instead we will
-    // batch load sequences which enables JDBC batch execution
-    dbIdentity.setSupportsGetGeneratedKeys(false);
     dbIdentity.setIdType(IdType.SEQUENCE);
     dbIdentity.setSupportsSequence(true);
+    dbIdentity.setSupportsIdentity(true);
+    dbIdentity.setSupportsGetGeneratedKeys(true);
+
+    this.dbDefaultValue.setFalse("0");
+    this.dbDefaultValue.setTrue("1");
+    this.dbDefaultValue.setNow("current_timestamp");
 
     this.treatEmptyStringsAsNull = true;
+    this.likeClauseRaw = "like ?";
+
+    this.exceptionTranslator =
+      new SqlErrorCodes()
+        //.addAcquireLock("")
+        .addDuplicateKey("1")
+        .addDataIntegrity("2291")
+        .build();
 
     this.openQuote = "\"";
     this.closeQuote = "\"";
 
     booleanDbType = Types.INTEGER;
-    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("number(1) default 0"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("number(1)"));
 
     dbTypeMap.put(DbType.INTEGER, new DbPlatformType("number", 10));
     dbTypeMap.put(DbType.BIGINT, new DbPlatformType("number", 19));
@@ -64,9 +74,8 @@ public class OraclePlatform extends DatabasePlatform {
   }
 
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
-
-    return new OracleSequenceIdGenerator(be, ds, seqName, batchSize);
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
+    return new OracleSequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
   }
 
   @Override
@@ -80,4 +89,5 @@ public class OraclePlatform extends DatabasePlatform {
         return sql + " for update";
     }
   }
+
 }

src/main/java/io/ebean/config/dbplatform/oracle/OracleSequenceIdGenerator.java

@@ -1,14 +1,14 @@
 package io.ebean.config.dbplatform.oracle;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceIdGenerator;
+import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
 
 import javax.sql.DataSource;
 
 /**
  * Oracle specific sequence Id Generator.
  */
-public class OracleSequenceIdGenerator extends SequenceIdGenerator {
+public class OracleSequenceIdGenerator extends SequenceBatchIdGenerator {
 
   private final String baseSql;
 

src/main/java/io/ebean/config/dbplatform/postgres/PostgresPlatform.java

@@ -1,17 +1,14 @@
 package io.ebean.config.dbplatform.postgres;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.Platform;
 import io.ebean.Query;
-import io.ebean.config.ServerConfig;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.IdType;
 import io.ebean.config.dbplatform.PlatformIdGenerator;
 import io.ebean.config.dbplatform.SqlErrorCodes;
-import io.ebean.dbmigration.ddlgeneration.DdlHandler;
-import io.ebean.dbmigration.ddlgeneration.platform.PostgresDdl;
 
 import javax.sql.DataSource;
 import java.sql.Types;
@@ -36,13 +33,14 @@ public class PostgresPlatform extends DatabasePlatform {
 
     this.dbEncrypt = new PostgresDbEncrypt();
     this.historySupport = new PostgresHistorySupport();
-    this.platformDdl = new PostgresDdl(this);
 
     // Use Identity and getGeneratedKeys
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsSequence(true);
 
+    this.dbDefaultValue.setNow("current_timestamp");
+
     this.exceptionTranslator =
       new SqlErrorCodes()
         .addAcquireLock("55P03")
@@ -91,20 +89,20 @@ public class PostgresPlatform extends DatabasePlatform {
   }
 
   /**
-   * Return a DdlHandler instance for generating DDL for the specific platform.
+   * So we can generate varchar[], int[], uuid[] column definitions and use the associated scalar types.
    */
   @Override
-  public DdlHandler createDdlHandler(ServerConfig serverConfig) {
-    return this.platformDdl.createDdlHandler(serverConfig);
+  public boolean isNativeArrayType() {
+    return true;
   }
 
   /**
    * Create a Postgres specific sequence IdGenerator.
    */
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
 
-    return new PostgresSequenceIdGenerator(be, ds, seqName, batchSize);
+    return new PostgresSequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
   }
 
   @Override

src/main/java/io/ebean/config/dbplatform/postgres/PostgresSequenceIdGenerator.java

@@ -1,14 +1,14 @@
 package io.ebean.config.dbplatform.postgres;
 
 import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceIdGenerator;
+import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
 
 import javax.sql.DataSource;
 
 /**
  * Postgres specific sequence Id Generator.
  */
-public class PostgresSequenceIdGenerator extends SequenceIdGenerator {
+public class PostgresSequenceIdGenerator extends SequenceBatchIdGenerator {
 
   private final String baseSql;
 

src/main/java/io/ebean/config/dbplatform/sqlanywhere/SqlAnywherePlatform.java

@@ -1,6 +1,6 @@
 package io.ebean.config.dbplatform.sqlanywhere;
 
-import io.ebean.Platform;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
@@ -27,7 +27,7 @@ public class SqlAnywherePlatform extends DatabasePlatform {
     this.dbIdentity.setSelectLastInsertedIdTemplate("select @@IDENTITY as X");
     this.dbIdentity.setSupportsIdentity(true);
 
-    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("bit default 0"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("bit"));
     dbTypeMap.put(DbType.BIGINT, new DbPlatformType("numeric", 19));
     dbTypeMap.put(DbType.REAL, new DbPlatformType("float(16)"));
     dbTypeMap.put(DbType.DOUBLE, new DbPlatformType("float(32)"));

src/main/java/io/ebean/config/dbplatform/sqlite/SQLitePlatform.java

@@ -1,11 +1,10 @@
 package io.ebean.config.dbplatform.sqlite;
 
-import io.ebean.Platform;
+import io.ebean.annotation.Platform;
 import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.IdType;
-import io.ebean.dbmigration.ddlgeneration.platform.SQLiteDdl;
 
 import java.sql.Types;
 
@@ -14,20 +13,27 @@ public class SQLitePlatform extends DatabasePlatform {
   public SQLitePlatform() {
     super();
     this.platform = Platform.SQLITE;
-    this.platformDdl = new SQLiteDdl(this);
-
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(false);
     this.dbIdentity.setSupportsSequence(false);
     this.dbIdentity.setSelectLastInsertedIdTemplate("select last_insert_rowid()");
 
     this.booleanDbType = Types.INTEGER;
+    this.likeClauseRaw = "like ?";
+    this.likeClauseEscaped = "like ?";
+    this.dbDefaultValue.setFalse("0");
+    this.dbDefaultValue.setTrue("1");
+    this.dbDefaultValue.setNow("CURRENT_TIMESTAMP");
 
-    dbTypeMap.put(DbType.BIT, new DbPlatformType("int default 0"));
-    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("int default 0"));
+    dbTypeMap.put(DbType.BIT, new DbPlatformType("int"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("int"));
     dbTypeMap.put(DbType.BIGINT, new DbPlatformType("integer"));
     dbTypeMap.put(DbType.SMALLINT, new DbPlatformType("integer"));
+  }
 
+  @Override
+  protected void escapeLikeCharacter(char ch, StringBuilder sb) {
+    sb.append(ch);
   }
 
 }